Updates
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name:
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rating: 4
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rating: 5
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references:
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created_by: 8mag
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created_date: 2020-09-23 20:52:05.657263
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updated_by: skybber
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updated_date: 2020-09-23 20:52:05.657284
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updated_date: 2022-02-09 20:48:48.195071
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---
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Emisní mlhovina pozorovaná v zajímavém zátiší.
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@ -4,6 +4,6 @@ rating: 1
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created_by: skybber
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created_date: 2020-09-23 20:52:15.588153
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updated_by: skybber
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updated_date: 2020-09-23 20:52:15.588171
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updated_date: 2022-02-09 20:48:48.195257
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Sice malá, ale nápadná (zejména v centru), uprostřed s hvězdou 11mag, která má 4 společníky. Okolní hvězdné pole je bohaté, zvlášť hned jihozápadně od mlhoviny.
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Sice malá, ale nápadná (zejména v centru), uprostřed s hvězdou 11mag, která má 4 společníky. Okolní hvězdné pole je bohaté, zvlášť hned jihozápadně od mlhoviny.
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 10:06:42.399474
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updated_by: skybber
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updated_date: 2022-02-10 10:06:55.910623
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aperture: 300/350
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 10:05:27.554643
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updated_by: skybber
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updated_date: 2022-02-10 10:05:27.765631
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---
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slabá reflexní mlhovina obklopující hvězdu 13,5 mag. Tato malá kruhová mlhovina je viditelná bez filtru.
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created_by: 8mag
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created_date: 2020-09-23 20:52:04.492697
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updated_by: skybber
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updated_date: 2021-01-30 10:01:50.141206
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updated_date: 2022-02-09 20:38:28.386704
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:56:14.538461
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updated_by: skybber
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updated_date: 2022-02-10 15:56:15.105449
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aperture: 300/350
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:56:14.877751
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updated_by: skybber
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updated_date: 2022-02-10 15:56:15.105731
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---
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poměrně jasná, malá, protáhlá ~ V-Z, dobře koncentrovaná s jasným jádrem obklopeným malým slabým halo, hvězdné jádro v okamžicích.
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aperture: 400/500
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:56:14.943477
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updated_by: skybber
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updated_date: 2022-02-10 15:56:15.105841
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velmi jasná, velmi velká, obsahuje jasnější 1,3' jádro, které je ostře koncentrované s intenzivním jádrem! Kruhové halo se táhne 3' a má poměrně plynulý povrchový jas. Vnější halo prochází širokou dvojicí hvězd mag 12/13 na západní straně. UGCA 126, tenký edge-on, leží 60' WSW.
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:57:12.216167
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updated_by: skybber
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updated_date: 2022-02-10 15:57:13.025009
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aperture: 400/500
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:57:12.833399
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updated_by: skybber
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updated_date: 2022-02-10 15:57:13.025177
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---
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velmi slabá, velmi malá, kulatá, s nízkým rovnoměrným jasem povrchu. Tvoří těsný pár s NGC 2293 1' JV a trojici zahrnující NGC 2295 jen 4' Z.
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:58:39.124100
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updated_by: skybber
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updated_date: 2022-02-10 15:58:39.900911
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aperture: 300/350
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:58:39.619593
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updated_by: skybber
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updated_date: 2022-02-10 15:58:39.901095
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---
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poměrně slabá, poměrně malá, protáhlá SZ. Hvězda 12. mag se nachází na JV okraji 1,6' od středu. Nachází se v bohatém hvězdném poli.
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:54:10.747979
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updated_by: skybber
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updated_date: 2022-02-10 15:54:11.340152
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aperture: 400/500
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:54:11.197224
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updated_by: skybber
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updated_date: 2022-02-10 15:54:11.340361
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---
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25 hvězd ve výrazné, poměrně bohaté 6' skupině, která je protáhlá ve směru SZ-JV. Nejjasnější hvězda HD 57370 je těsný dvojník (HLD 87 = 9,4/9,7 při 5"). Pěkná protáhlá skupina na jižním konci zahrnuje jasnou dvojhvězdu, tři další hvězdy 11/12 mag a několik slabších hvězd. Kompaktní skupina čtyř hvězd je v poli na severu. Nachází se v bohatém poli s malým výkonem při zvětšení 100x.
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:55:17.476399
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updated_by: skybber
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updated_date: 2022-02-10 15:55:18.243790
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aperture: 200/250
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:55:17.920377
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updated_by: skybber
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updated_date: 2022-02-10 15:55:18.243966
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---
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malá bohatá hvězdokupa 11-13 mag, tři hvězdy 10 mag jsou blízko, NGC 2384 leží 8' SSE.
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aperture: 400/500
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:55:18.059693
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updated_by: skybber
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updated_date: 2022-02-10 15:55:18.244045
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---
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asi 30 hvězd 10-14 mag v průměru 5' a bohatá hvězdokupa 13-14 mag poblíž centra. Včetně tří hvězd 10. mag; jedna na západním konci, další východně od středu a poslední na východním konci. JZ od hvězdy mag. 10 poblíž středu je bohatý zářící uzel, který je velmi pěkný při odvrácené pozornosti. Hvězdokupa se nachází nad nerozlišitelným zákalem na pozadí. NGC 2384 je v poli 8' JV.
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:52:05.093165
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updated_by: skybber
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updated_date: 2022-02-10 15:52:05.572839
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UGC klasifikuje IC 2431 jako čtyřnásobný systém. V atlasu V-V Interacting Galaxies II je poznámka ""Browning". Tři?" Název "Browning" pravděpodobně odkazuje na pistoli Browning, které se v atlase podobá.
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aperture: 900/1200
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:52:05.572330
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updated_by: skybber
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updated_date: 2022-02-10 15:52:05.573043
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---
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při zvětšení 488x byla tato kompaktní 25" čtveřice rozdělena na trojici sousedících, extrémně malých "uzlů" (galaxií), každá o průměru ~8", uvnitř společného hala. Zdálo se, že jedna nebo dvě z nich mají hvězdné jádro včetně uzlu na jižní straně, což odpovídá SDSS J090434.82+143536.3 = LEDA 200246 (V = 15,7). Další dva uzly jsou velmi blízko na západě a severozápadě (LEDA 200245). Hvězda 12. mag se nachází 1,7' SZ. V době pozorování byl poměrně špatný seeing, takže jsem musel počkat na stabilní okamžiky, abych mohl složky rozlišit.
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name:
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rating: 1
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rating: 5
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references:
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created_by: skybber
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created_date: 2020-09-23 20:52:01.113632
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 10:10:01.544773
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updated_by: skybber
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updated_date: 2022-02-10 10:10:02.346091
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---
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Édouard Stephan objevil NGC 2535 = St VIIIb-26 22. ledna 1877 spolu s NGC 2536 . Jeho poloha odpovídá UGC 4264.
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SN 1901A v NGC 2535 (jednu z prvních nalezených) objevil Karl Reinmuth v roce 1923 na Heidelberské desce pořízené 10. 1. 1901. Oznámení bylo učiněno v roce 1924AN....221...47R.
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aperture: 300/350
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 10:10:02.114948
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updated_by: skybber
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updated_date: 2022-02-10 10:10:02.346269
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slabý, malý, kulatý, rozptýlený, rovnoměrný povrchový jas. Nachází se 22' SSV od hvězdy 6mag.
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aperture: 400/500
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 10:10:02.219629
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updated_by: skybber
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updated_date: 2022-02-10 10:10:02.346330
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poměrně slabá, poměrně malá, mírně protáhlá JV-SZ, slabá koncentrace. Tvoří těsný pár s NGC 2536 1,8' SSE (Arp 82). Nachází se těsně za linií tří hvězd 12mag. 1,6' JZ, 1,2' Z a 0,9' SZ od středu.
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aperture: 900/1200
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 10:10:02.345617
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updated_by: skybber
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updated_date: 2022-02-10 10:10:30.165262
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---
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je prominentním členem nápadné interagující dvojice (Arp 82) s NGC 2536 1,8' SSE. Při zvětšení 375x se jevila jasná, poměrně velká, protáhlá 5:3 JV-SV, ~1,6' x0,9' (včetně ramen). Obsahuje poměrně velké, jasné jádro o rozměrech ~40 "x30", které je přerušeno velmi jasným hvězdným jádrem. Na západní straně jádra je připojeno půvabné spirální rameno, které se stáčí ve směru hodinových ručiček k jihu a jihovýchodu ve směru NGC 2536 . Rameno směrem k jihovýchodnímu konci slábne, i když se při odvráceném pohledu zvětšuje. Přesto nedosahovalo k menšímu průvodci. Druhé rameno se připojuje na východní straně a vystřeluje k severu, ačkoli je pouze 2/3 délky jižního ramene. Od západní strany galaxie se odděluje řetězec (o délce 1,4') tří hvězd 12-13 mag.
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---
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name: Medvědí tlapa
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rating: 4
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rating: 6
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references:
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created_by: 8mag
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created_date: 2020-09-23 20:52:01.188890
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updated_by: skybber
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updated_date: 2020-09-23 20:52:01.188920
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updated_date: 2022-02-09 21:07:06.940688
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created_by: 8mag
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created_date: 2020-09-23 20:52:09.322321
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updated_by: skybber
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updated_date: 2020-09-23 20:52:09.322339
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updated_date: 2022-02-09 21:07:06.940870
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---
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350x, 6m5+
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350x, 6m5+
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Struktura tlapky není okamžitě patrná, ale jsou patrné všechny tři prsty. Nejlehčí prst na Z s uzlem na S konci. Prostředníček úzký s těžko určitelným severním zakončením. V prst slabší než Z, ale má lépe definovanou V hranu. Slabá hvězda leží na S konci galaxie
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:50:22.753481
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updated_by: skybber
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updated_date: 2022-02-10 15:50:23.432236
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aperture: 300/350
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:50:23.196599
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updated_by: skybber
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updated_date: 2022-02-10 15:50:23.432411
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slabá, malá, mírně protáhlá, slabá koncentrace.
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aperture: 900/1200
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:50:23.431758
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updated_by: skybber
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updated_date: 2022-02-10 15:50:23.432493
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---
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tento systém je pozdní fází galaktického splynutí a obsahuje dva poměrně výrazné slapové chvosty. Při 488x a 610x se jevila jako jasná, středně velká, ostře koncentrovaná s velmi jasným tyčinkovitým jádrem ~ V-Z. Jádro bylo o něco jasnější na západním konci. Oba slapové chvosty byly viditelné jen s velkými obtížemi. Východní chvost byl o něco jasnější a od centrální oblasti se stáčel na sever a pak na východ (ohyb proti směru hodinových ručiček). Toto rameno bylo viditelné přímým pohledem a mělo snad 0,9' délky. Jižní slapový ohon byl docela rovný a rozptýlenější, táhl se na jihozápad, ~0,7'. Oba chvosty měly poměrně vyrovnaný povrchový jas a slábly pouze směrem ke koncům. Hvězda mag 17,5 (není obtížná) se nachází 0,9' SZ od středu.
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name:
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rating: 4
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rating: 7
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references:
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created_by: 8mag
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created_date: 2020-09-23 20:52:04.883271
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updated_by: skybber
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updated_date: 2021-01-24 19:12:44.499079
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updated_date: 2022-02-09 21:04:54.965600
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---
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Spirální galaxie, kterou pozorujeme zboku nedaleko hranice se souhvězdím Raka.
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Spirální galaxie, kterou pozorujeme zboku nedaleko hranice se souhvězdím Raka.
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name:
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rating: 1
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references:
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created_by: skybber
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created_date: 2022-02-10 15:47:20.813626
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updated_by: skybber
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updated_date: 2022-02-10 15:47:52.826282
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aperture: 400/500
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rating: 1
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created_by: skybber
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created_date: 2022-02-10 15:47:52.565213
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updated_by: skybber
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||||
updated_date: 2022-02-10 15:47:52.826457
|
||||
---
|
||||
poměrně slabá, malá, protáhlá 2:1 V-Z. Na jihu jsou čtyři jasné hvězdy. Tři z těchto hvězd orientované ve směru Z-JZ tvoří mělký oblouk; hvězda mag 10 1,6' J, mag 9,1 SAO 80591 3,2' JZ, mag 9,0 SAO 80590 4,6' JZ. Také hvězda s mag 7,2 SAO 80592 leží 5' SSZ (2' J od SAO 80591).
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
---
|
||||
aperture: 600/800
|
||||
rating: 1
|
||||
created_by: skybber
|
||||
created_date: 2022-02-10 15:48:42.143528
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 15:48:42.239890
|
||||
---
|
||||
středně světlá a velká, velmi protáhlá 3:1 V-Z, 0,9'x0,3', obsahuje světlé protáhlé jádro. Tvoří těsný pár (VV 40 = Arp 287) s NGC 2735A = PGC 25402 jen 45" východně od středu, ale oddělený. Při zvětšení 375x se průvodce jevil jako velmi slabý a malý, kulatý, o průměru pouhých 10"-12". Nachází se 4,9' SZ od HD 77313 mag 7,3, spolu se třemi hvězdami 9-10 mag ještě blíže.
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
---
|
||||
name:
|
||||
rating: 1
|
||||
references:
|
||||
created_by: skybber
|
||||
created_date: 2022-02-10 15:44:15.941599
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 15:46:24.230853
|
||||
---
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
---
|
||||
aperture: 400/500
|
||||
rating: 1
|
||||
created_by: skybber
|
||||
created_date: 2022-02-10 15:46:24.085946
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 15:46:24.231117
|
||||
---
|
||||
Poměrně slabá, malý, kulatá, průměr 1,0'. Mírně koncentrovaná do malého jasného jádra a hvězdného jádra. Tvoří SV vrchol pravoúhlého trojúhelníku s hvězdou SAO 80618 mag. 9,7 4' WSW a hvězdou mag. 11,5 3,5' SSW. Superponovaný průvodce na západní straně nebyl pozorován.
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
---
|
||||
aperture: 600/800
|
||||
rating: 1
|
||||
created_by: skybber
|
||||
created_date: 2022-02-10 15:46:24.143777
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 15:46:24.231218
|
||||
---
|
||||
poměrně slabá až středně jasná, středně velká, silná koncentrace s velmi malým jasným jádrem a kvazihvězdným jádrem, poměrně velké mírně protáhlé halo 1,2'x1,0'. Na západním okraji bylo patrné velmi slabé, protáhlé zjasnění. Tento objekt je katalogizován jako KPG 186A = PGC 93099, ale na SDSS se zdá, že se jedná spíše o jasnou uzlovou hvězdotvornou oblast.
|
||||
|
|
@ -1,10 +1,10 @@
|
|||
---
|
||||
name:
|
||||
rating: 4
|
||||
rating: 5
|
||||
references:
|
||||
created_by: 8mag
|
||||
created_date: 2020-09-23 20:52:04.773583
|
||||
updated_by: skybber
|
||||
updated_date: 2020-09-23 20:52:04.773606
|
||||
updated_date: 2022-02-09 21:05:52.769786
|
||||
---
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -4,7 +4,7 @@ rating: 1
|
|||
created_by: skybber
|
||||
created_date: 2020-09-23 20:52:14.651379
|
||||
updated_by: skybber
|
||||
updated_date: 2020-09-23 20:52:14.651401
|
||||
updated_date: 2022-02-09 21:05:52.769973
|
||||
---
|
||||
283x, 6m5+
|
||||
283x, 6m5+
|
||||
Středně velká face-on galaxie s malou, výraznou centrální oblastí a slabým, rozptýleným a zužujícím se halem. Pouze náznak struktury uvnitř hala. Těsně přiléhající spirálové rameno na SZ straně je nejvýraznější. Další rameno je přímo nad temným pásem. Celkově je spirálová struktura nesmírně obtížně uchopitelná. 1'JV od středu je na okraji hala slabá 15mag hvězda, která je nepřímo udržitelná.
|
||||
|
|
@ -1,10 +1,10 @@
|
|||
---
|
||||
name:
|
||||
rating: 4
|
||||
rating: 5
|
||||
references:
|
||||
created_by: 8mag
|
||||
created_date: 2020-09-23 20:52:04.767489
|
||||
updated_by: skybber
|
||||
updated_date: 2021-01-24 19:56:32.817752
|
||||
updated_date: 2022-02-09 21:06:34.803994
|
||||
---
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -1,11 +1,11 @@
|
|||
---
|
||||
name: Sluchátka
|
||||
rating: 1
|
||||
rating: 6
|
||||
references:
|
||||
created_by: skybber
|
||||
created_date: 2020-09-23 20:52:07.772407
|
||||
updated_by: skybber
|
||||
updated_date: 2021-01-24 20:09:35.071705
|
||||
updated_date: 2022-02-09 21:08:16.673390
|
||||
---
|
||||
|
||||
|
||||
Známá spiše jako Jones-Emberson 1.
|
||||
|
|
@ -4,7 +4,7 @@ rating: 1
|
|||
created_by: skybber
|
||||
created_date: 2020-09-23 20:52:18.367184
|
||||
updated_by: skybber
|
||||
updated_date: 2021-01-24 20:09:35.071925
|
||||
updated_date: 2022-02-09 21:08:16.673566
|
||||
---
|
||||
100x, [OIII] filtr, 6m8
|
||||
100x, [OIII] filtr, 6m8
|
||||
Velká, přibližně kulatá PN. Dva mírně odsazené uzly. JV uzel širší, zužuje se na S. Uzel na SZ úzký, končí přímkou na J. PN se zdá otevřená na SV a JZ. Uprostřed tmavší, ale ne úplně černá. Tři hvězdy září uvnitř i s [OIII].
|
||||
|
|
@ -4,6 +4,6 @@ constellation: Oph
|
|||
created_by: 8mag
|
||||
created_date: 2020-09-23 20:52:20.787826
|
||||
updated_by: skybber
|
||||
updated_date: 2020-09-23 20:52:20.787866
|
||||
updated_date: 2022-02-10 16:55:00.862861
|
||||
---
|
||||
dvojhvězda 3 stupně na severozápad od Antarese, tvořená modrými složkami jasnosti 5,3mag a 6mag v odstupu 3,1"(4,59mag). Oblast kolem nich je zajímavou pro fotografy. Na západě se nachází podlouhlá temná mlhovina Barnard 42, která se ukazuje jako silueta na krásném plynové prachovém komplexu IC 4604, který ozařuje právě hvězda ρ Ophiuchi. Mlhovina má však velmi slabou plošnou jasnost.
|
||||
dvojhvězda 3° na severozápad od Antara, tvořená modrými složkami jasnosti 5,3mag a 6mag v odstupu 3,1"(4,59mag). Oblast kolem nich je zajímavou pro fotografy. Na západě se nachází podlouhlá temná mlhovina Barnard 42, která se ukazuje jako silueta na krásném plynové prachovém komplexu IC 4604, který ozařuje právě hvězda ρ Ophiuchi. Mlhovina má však velmi slabou plošnou jasnost.
|
||||
|
|
@ -4,6 +4,6 @@ constellation: Lyr
|
|||
created_by: 8mag
|
||||
created_date: 2020-09-23 20:52:22.171549
|
||||
updated_by: skybber
|
||||
updated_date: 2020-09-23 20:52:22.171568
|
||||
updated_date: 2022-02-10 16:49:59.938076
|
||||
---
|
||||
"Dvojitá dvojhvězda", vícenásobný systém v blízkosti Vegy, ve kterém můžeme už ostrým zrakem rozlišit dvě složky. V triedru jsou tyto složky zřetelně rozeznatelné, jasnosti 5,1mag a 5,4mag v odstupu 208 obloukových vteřin, které se při pozorování alespoň 60 mm dalekohledem a větším zvětšení rozpadnou na dvojhvězdy (průvodci ε1 6,5mag a ε2 5,3mag). Vzájemná vzdálenost jedné dvojice je 2,6", druhé 2,3" a jejich oběžné doby jsou určeny na 1 166 a 585 let. Vzdálené jsou 162ly a 156ly.
|
||||
"Dvojitá dvojhvězda", vícenásobný systém v blízkosti Vegy, ve kterém můžeme už ostrým zrakem rozlišit dvě složky. V triedru jsou tyto složky zřetelně rozeznatelné, jasnosti 5,1mag a 5,4mag v odstupu 208", které se při pozorování alespoň 60 mm dalekohledem a větším zvětšení rozpadnou na dvojhvězdy (průvodci ε1 6,5mag a ε2 5,3mag). Vzájemná vzdálenost jedné dvojice je 2,6", druhé 2,3" a jejich oběžné doby jsou určeny na 1 166 a 585 let. Vzdálené jsou 162ly a 156ly.
|
||||
|
|
@ -4,6 +4,6 @@ constellation: Sgr
|
|||
created_by: 8mag
|
||||
created_date: 2020-09-23 20:52:21.061308
|
||||
updated_by: skybber
|
||||
updated_date: 2020-09-23 20:52:21.061346
|
||||
updated_date: 2022-02-11 15:37:48.590933
|
||||
---
|
||||
široká optická dvojhvězda vhodná na pozorování triedru. U hlavní složce 3,9mag se navíc ve vzdálenosti 28,4" nachází průvodce 8. magnitudy.
|
||||
široká optická dvojhvězda vhodná na pozorování triedrem. U hlavní složce 3,9mag se navíc ve vzdálenosti 28,4" nachází průvodce 8. magnitudy.
|
||||
|
|
@ -3,7 +3,7 @@ name: 54 Sgr
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2020-09-23 20:52:21.948008
|
||||
updated_by: 8mag
|
||||
updated_date: 2020-09-23 20:52:21.948026
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:38:46.553015
|
||||
---
|
||||
pěkná trojhvězdí snadno rozlišitelná v malých dalekohledech. Nejjasnější složka je tmavě žlutá (5,4mag), další bleděmodrá (11,9mag) a třetí nažloutlá (8,9mag). Odstup páru AB je 38 ", odstup složek AC = 45,6".
|
||||
pěkné trojhvězdí snadno rozlišitelná v malých dalekohledech. Nejjasnější složka je tmavě žlutá (5,4mag), další bleděmodrá (11,9mag) a třetí nažloutlá (8,9mag). Odstup páru AB je 38 ", odstup složek AC = 45,6".
|
||||
|
|
@ -3,10 +3,10 @@ name: Aquila
|
|||
created_by: skybber
|
||||
created_date: 2021-06-01 19:57:14.885829
|
||||
updated_by: skybber
|
||||
updated_date: 2022-01-17 18:21:28.162349
|
||||
updated_date: 2022-02-11 15:52:49.320656
|
||||
---
|
||||
|
||||
A prominent constellation situated on the celestial equator, in the Milky Way region, divided in two by the Great Rift, lying in the sky to the south below the Swan, the Arrow and the Fox. The Milky Way, stretching through the northern and western parts of the constellation, is rich in stars in this region, overlaid in some places with dark clouds of gas and dust, and during summer nights it becomes a favorite walk for stargazers with triads. The brightest shining star is the blue-white star Altair, which, along with the stars Vega of the constellation Lyra and Deneb of the Swan, forms the Summer Landmark Triangle. The constellation contains no prominent deep-sky objects, but there are a number of fainter and smaller planets and dark nebulae, the most famous of which is the so-called Dark Spot in Eagle. This exceptionally dark dust cloud is found one and a half degrees from gamma Aquilae, the northern part of which is usually referred to in atlases as Barnard 143, the southern part being Barnard 142. In the triad it appears as a starless "E" shaped region really leaving a strong impression of an opaque substance placed between the observer and the distant stars.
|
||||
A prominent constellation situated on the celestial equator, in the Milky Way region, divided in two by the Great Rift, lying in the sky to the south below the Cygnus, the Sagitta and the Vulpecula. The Milky Way, stretching through the northern and western parts of the constellation, is rich in stars in this region, overlaid in some places with dark clouds of gas and dust, and during summer nights it becomes a favorite walk for stargazers with triads. The brightest shining star is the blue-white star Altair, which, along with the stars Vega of the constellation Lyra and Deneb of the Cygnus, forms the Summer Landmark Triangle. The constellation contains no prominent deep-sky objects, but there are a number of fainter and smaller planets and dark nebulae, the most famous of which is the so-called Dark Spot in Eagle. This exceptionally dark dust cloud is found one and a half degrees from gamma Aquilae, the northern part of which is usually referred to in atlases as Barnard 143, the southern part being Barnard 142. In the triad it appears as a starless "E" shaped region really leaving a strong impression of an opaque substance placed between the observer and the distant stars.
|
||||
|
||||
Visually, the Milky Way in Eagle leaves the impression that it is riddled with gas and dust clouds of the Great Rift, not equally bright in every place, containing stellar clouds, conspicuous patches of random nearby faint stars, and dark nebulae that cut into the Milky Way to form its shape . The first slight brightening is in the mainstream east of the star 23 Aql, roughly where the Milky Way crosses the level of the celestial equator. To the west of Altair, a bright elongated belt appears again, converging into the constellation of the Arrow. About 2/3 of the distance from above, it has another brightening and a circular (but less prominent) one west of the star Mu Aql.
|
||||
|
||||
|
|
|
|||
|
|
@ -3,8 +3,8 @@ name: Auriga
|
|||
created_by: skybber
|
||||
created_date: 2021-06-02 18:57:03.133087
|
||||
updated_by: skybber
|
||||
updated_date: 2022-01-17 18:22:14.879389
|
||||
updated_date: 2022-02-11 17:00:05.583123
|
||||
---
|
||||
A striking constellation in the northern sky in an interesting part of the winter Milky Way. Bright stars form a distinctive horseshoe pattern between the constellations Gemini and Perseus. Its northern part is circumpolar in our latitudes, the whole constellation not falling below the northern horizon until 60 degrees north latitude. The constellation of Charioteer is easily found thanks to the bright star Capella, which is also accompanied a little further south by three stars: ε, ζ and η Aurigae, which are called "Kids of the she-goat Capella" (Haedus). They are visible as a small triangle of stars. It is at this point that the Milky Way begins to regain its brightness and continues next to the Ladder (a striking line of tight 5th magnitude constellations 16, 17, 18, 19 and IQ Aurigae) in the form of an interesting narrow band to the south. Within the distinctive horseshoe pattern formed by the constellation's five brightest stars lies the so-called Big Three in the Wozze - a trio of Messier clusters M36, M37 and M38, all of which can be visible without binoculars during excellent conditions.
|
||||
A striking constellation in the northern sky in an interesting part of the winter Milky Way. Bright stars form a distinctive horseshoe pattern between the constellations Gemini and Perseus. Its northern part is circumpolar in our latitudes, the whole constellation not falling below the northern horizon until 60 degrees north latitude. The constellation of Auriga is easily found thanks to the bright star Capella, which is also accompanied a little further south by three stars: ε, ζ and η Aurigae, which are called "Kids of the she-goat Capella" (Haedus). They are visible as a small triangle of stars. It is at this point that the Milky Way begins to regain its brightness and continues next to the Ladder (a striking line of tight 5th magnitude constellations 16, 17, 18, 19 and IQ Aurigae) in the form of an interesting narrow band to the south. Within the distinctive horseshoe pattern formed by the constellation's five brightest stars lies the so-called Big Three in the Wozze - a trio of Messier clusters M36, M37 and M38, all of which can be visible without binoculars during excellent conditions.
|
||||
|
||||
|
||||
|
|
@ -3,7 +3,7 @@ name: Cancer
|
|||
created_by: skybber
|
||||
created_date: 2021-06-02 19:22:26.823362
|
||||
updated_by: skybber
|
||||
updated_date: 2022-01-17 18:23:29.539270
|
||||
updated_date: 2022-02-11 17:01:37.921663
|
||||
---
|
||||
A faint constellation in the northern sky between Gemini and Leo. The inverted "Y" lies in the centre of an equilateral triangle formed by the stars Pollux, Regulus and Procyon. It is formed by the stars Altarf, Acubens, Asellus Australus, ι and χ Cancri. 2000 years ago, the Sun passed through Cancer at the time of the summer solstice, so it was the northernmost constellation of the zodiac. It currently passes through it from July 20 to August 9. However, the sign of Cancer still marks the summer solstice and the Tropic of Cancer is called the Tropic of Cancer in the northern hemisphere. At present, the Sun rises highest in the northern hemisphere at the boundary of the constellations Gemini and Taurus. Cancer is the least prominent constellation of the zodiac, with only one of its stars exceeding 4th magnitude. A moonless night is therefore a prerequisite for seeing the constellation at its best in the sky. Cancer boasts two open star clusters, some of the most beautiful in the entire sky. The brighter one is M44, located almost in the centre of the constellation. In ancient times, in 270 BC, the Greek poet Aratus called it "Praesepe". Several centuries have passed since then, when Galileo Galilei first resolved them into individual stars with a telescope in 1610. Nowadays, a simple triad will do the trick. There are also several binary stars in the constellation, and because it is further away from the Milky Way, we can find a greater number of fainter galaxies.
|
||||
|
||||
|
|
|
|||
|
|
@ -3,8 +3,8 @@ name: Canis major
|
|||
created_by: skybber
|
||||
created_date: 2021-06-03 15:40:18.970565
|
||||
updated_by: skybber
|
||||
updated_date: 2022-01-17 18:24:12.586324
|
||||
updated_date: 2022-02-11 17:03:14.837168
|
||||
---
|
||||
A striking constellation in the southern sky, made up of bright and simply arranged stars. The constellation includes Sirius, the brightest star in the night sky. Apart from the Sun and the Moon, it is only outshined by the planets Jupiter, Saturn and Mars. Sirius is also one of the vertices of the Winter Triangle, along with Procyon of the Little Dog and the star Betelgeuse in the right arm of Orion. The constellation is not the most extensive, but neither is it somehow poor in interesting objects that become the target of many amateur astronomers. Thanks to its position in the Milky Way's winter Milky Way, the Big Dog is rich in various open clusters, of which M41 is the clear leader. It also contains several nebula complexes, a planetary nebula, and a few galaxies whose light has broken through the gas and dust clouds of the Milky Way. For binary enthusiasts, this rich region is certainly well suited. Globular clusters are not found in the constellation.
|
||||
A striking constellation in the southern sky, made up of bright and simply arranged stars. The constellation includes Sirius, the brightest star in the night sky. Apart from the Sun and the Moon, it is only outshined by the planets Jupiter, Saturn and Mars. Sirius is also one of the vertices of the Winter Triangle, along with Procyon of the Canis Major and the star Betelgeuse in the right arm of Orion. The constellation is not the most extensive, but neither is it somehow poor in interesting objects that become the target of many amateur astronomers. Thanks to its position in the Milky Way's winter Milky Way, the Big Dog is rich in various open clusters, of which M41 is the clear leader. It also contains several nebula complexes, a planetary nebula, and a few galaxies whose light has broken through the gas and dust clouds of the Milky Way. For binary enthusiasts, this rich region is certainly well suited. Globular clusters are not found in the constellation.
|
||||
|
||||
|
||||
|
|
@ -3,9 +3,9 @@ name: Capricornus
|
|||
created_by: skybber
|
||||
created_date: 2021-06-03 15:44:57.015790
|
||||
updated_by: skybber
|
||||
updated_date: 2022-01-17 18:25:13.990661
|
||||
updated_date: 2022-02-11 15:54:02.820234
|
||||
---
|
||||
|
||||
A faint zodiac constellation of the southern sky between Aquarius and Sagittarius. The constellation consists of faint stars forming a distorted triangle shape, none brighter than 3mag. It is reached by the conjunction of two bright stars, Vega and Altair. Nearby are other water constellations: Aquarius, Pisces, Whale and Southern Pisces - the Sun's passage through this region marked a period of rainy weather in the eastern Mediterranean and Middle East. Because Capricorn is very good at jumping on rocks, it made its way up into the sky as a symbol of the rising Sun - the return of longer days and a harbinger of spring. In fact, 2,000 years ago, the Sun passed through Capricorn at the time of the winter solstice, was lowest in the sky, and began to rise higher and higher in the celestial vault as it moved to the next constellation. However, this has long been untrue. Due to precession, the Sun passes through the constellation from January 20 to February 15, and at the time of the winter solstice it is in Sagittarius - today the southernmost constellation of the zodiac. However, the sign of Capricorn remains the sign of the winter solstice to this day, and the vertex of the southern hemisphere from which the Sun turns back north is called the vertex of Capricorn.
|
||||
A faint zodiac constellation of the southern sky between Aquarius and Sagittarius. The constellation consists of faint stars forming a distorted triangle shape, none brighter than 3mag. It is reached by the conjunction of two bright stars, Vega and Altair. Nearby are other water constellations: Aquarius, Pisces, Cetus and Southern Pisces - the Sun's passage through this region marked a period of rainy weather in the eastern Mediterranean and Middle East. Because Capricornus is very good at jumping on rocks, it made its way up into the sky as a symbol of the rising Sun - the return of longer days and a harbinger of spring. In fact, 2,000 years ago, the Sun passed through Capricornus at the time of the winter solstice, was lowest in the sky, and began to rise higher and higher in the celestial vault as it moved to the next constellation. However, this has long been untrue. Due to precession, the Sun passes through the constellation from January 20 to February 15, and at the time of the winter solstice it is in Sagittarius - today the southernmost constellation of the zodiac. However, the sign of Capricornus remains the sign of the winter solstice to this day, and the vertex of the southern hemisphere from which the Sun turns back north is called the vertex of Capricornus.
|
||||
|
||||
Although Capricorn is located just east of the rich Milky Way region in Sagittarius and occupies a good portion of the sky, it is surprisingly poor in deepsky objects. The region does, however, contain some beautiful double and multiple stars, suitable for binoculars or small telescopes, and in their wide field of view they can look almost like a loose open star cluster. Capricorn, on the other hand, boasts just one interesting globular cluster - M30. Near the star μ Capricorn, the Berlin astronomer Johann Gottfried Galle found another planet in our solar system - Neptune - in 1846, based on Leverrier's calculations.
|
||||
|
|
@ -3,10 +3,10 @@ name: Cepheus
|
|||
created_by: skybber
|
||||
created_date: 2021-06-06 08:42:45.907258
|
||||
updated_by: skybber
|
||||
updated_date: 2022-01-17 18:26:37.835361
|
||||
updated_date: 2022-02-11 15:55:24.061943
|
||||
---
|
||||
A constellation of the northern sky extending to the celestial pole, which does not fit in our latitudes. It is formed by a rhombus lying at the elongated junction of the Big Dipper with Polaris, which peaks at midnight in late August near the zenith, and is therefore best seen in the evening during October and November. We can help us find it by using, for example, Cassiopeia - it is pointed at the 2 times elongated conjunction of the stars Shedir and Caph. Cepheus is a relatively inconspicuous constellation sandwiched between the brighter and easier to distinguish Cassiopeia and the Swan, although its star shape, resembling the drawing of a child's house, is easy to find under average viewing conditions: α, β, ζ and ι Cephei represent the corners of this house, with γ Cephei at the tip of its roof. The southern part of the constellation also extends into the Milky Way, and at first glance it would appear that there is not a single interesting deepsky object to be found here. But there isn't. You need to get your hands on a better binocular or at least a smaller telescope! Surprises start to emerge from the endless depths of space in the form of interesting stars, clusters and nebulae.
|
||||
A constellation of the northern sky extending to the celestial pole, which does not fit in our latitudes. It is formed by a rhombus lying at the elongated junction of the Big Dipper with Polaris, which peaks at midnight in late August near the zenith, and is therefore best seen in the evening during October and November. We can help us find it by using, for example, Cassiopeia - it is pointed at the 2 times elongated conjunction of the stars Shedir and Caph. Cepheus is a relatively inconspicuous constellation sandwiched between the brighter and easier to distinguish Cassiopeia and the Cygnus, although its star shape, resembling the drawing of a child's house, is easy to find under average viewing conditions: α, β, ζ and ι Cephei represent the corners of this house, with γ Cephei at the tip of its roof. The southern part of the constellation also extends into the Milky Way, and at first glance it would appear that there is not a single interesting deepsky object to be found here. But there isn't. You need to get your hands on a better binocular or at least a smaller telescope! Surprises start to emerge from the endless depths of space in the form of interesting stars, clusters and nebulae.
|
||||
|
||||
|
||||
|
||||
From the emission nebula IC 1396, a hazy but still clearly visible Milky Way bulge penetrates the Cephean rhombus, separating a narrower, darker bay in the direction of the ζ-ι Cephei line from the main Milky Way stream (continuing on to Cassiopeia). It is brightest in the vicinity of stars 18, 19 and 20 Cephei, which together with a few other fainter stars form a brightening of about three degrees. If observing conditions allow you to see even faint stars, the moon isn't exactly in the sky, and someone decides to turn off the public lighting in the area, it's worth noting that the Milky Way continues on to γ Cephei (where it is closest to Polaris) and only ends in a hazy arc at brightening at the point where most star atlases plot the large open cluster Collinder 463. Between this arc and the mainstream, a chain of dark nebulae (the Second Great Rift) very similar to the one in the Swan becomes apparent.
|
||||
From the emission nebula IC 1396, a hazy but still clearly visible Milky Way bulge penetrates the Cephean rhombus, separating a narrower, darker bay in the direction of the ζ-ι Cephei line from the main Milky Way stream (continuing on to Cassiopeia). It is brightest in the vicinity of stars 18, 19 and 20 Cephei, which together with a few other fainter stars form a brightening of about three degrees. If observing conditions allow you to see even faint stars, the moon isn't exactly in the sky, and someone decides to turn off the public lighting in the area, it's worth noting that the Milky Way continues on to γ Cephei (where it is closest to Polaris) and only ends in a hazy arc at brightening at the point where most star atlases plot the large open cluster Collinder 463. Between this arc and the mainstream, a chain of dark nebulae (the Second Great Rift) very similar to the one in the Cygnus becomes apparent.
|
||||
|
|
@ -3,8 +3,8 @@ name: Delphinus
|
|||
created_by: skybber
|
||||
created_date: 2021-06-20 18:23:40.348382
|
||||
updated_by: skybber
|
||||
updated_date: 2021-06-20 18:23:40.348590
|
||||
updated_date: 2022-02-11 15:57:38.508256
|
||||
---
|
||||
A small but striking constellation in the northern sky, located between Pegasus and Eagle - near the bright star Altair. It lies just off the eastern edge of the summer Milky Way in the direction of the body of Eagle. The four stars of the constellations α, β, γ, and δ Delphin (all 3.5-4.5mag brightness) form a distinctive parallelogram that looks a bit like an open cluster and is sometimes called Job's Ark. Since the stars η Del (5.38mag) and ε Del (4.3mag) also lie nearby, the constellation takes on a nice shape that novice observers sometimes mistake for the Pleiades or the Little Dipper. The constellation, although it lies on the edge of the Milky Way, does not contain such objects as open clusters or emission nebulae. It is dominated by planetary clusters, globular clusters and a few galaxies. The most beautiful object, however, is undoubtedly the easily distinguishable binary γ Del.
|
||||
A small but striking constellation in the northern sky, located between Pegasus and Aquila - near the bright star Altair. It lies just off the eastern edge of the summer Milky Way in the direction of the body of Eagle. The four stars of the constellations α, β, γ, and δ Delphinus (all 3.5-4.5mag brightness) form a distinctive parallelogram that looks a bit like an open cluster and is sometimes called Job's Ark. Since the stars η Del (5.38mag) and ε Del (4.3mag) also lie nearby, the constellation takes on a nice shape that novice observers sometimes mistake for the Pleiades or the Little Dipper. The constellation, although it lies on the edge of the Milky Way, does not contain such objects as open clusters or emission nebulae. It is dominated by planetary clusters, globular clusters and a few galaxies. The most beautiful object, however, is undoubtedly the easily distinguishable binary γ Del.
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@ name: Gemini
|
|||
created_by: skybber
|
||||
created_date: 2021-06-26 08:42:45.281861
|
||||
updated_by: skybber
|
||||
updated_date: 2021-06-26 08:42:45.282197
|
||||
updated_date: 2022-02-11 17:04:17.253700
|
||||
---
|
||||
The constellation of the northern sky, which the Sun passes through after the summer solstice from 21 June to 19 July, therefore rises high above the horizon in winter. The constellation's bright stars form an irregular rectangle between Cancer and Taurus. The pair of brightest stars that reach first sidereal magnitude are called Kastor and Pollux. They are quite different: the brighter and closer Pollux is a lonely orange giant, without guides or points of interest. Kastor is a little fainter, but is an impressive star system, and so is in turn one of the most interesting stars in the sky. The constellation is crossed by the winter Milky Way on its western edge, so it offers a wide variety of celestial objects: from emission and planetary nebulae and open clusters to binaries and variable stars. The most impressive of these are the large open cluster M35, which is the most beautiful of its kind in our winter sky after the Hyades and Pleiades, and the bright planetary nebula Eskimo. In the latter part of the constellation, outside the Milky Way, lie quite a number of faint galaxies. Great discoveries have been made in Gemini in the past. Near the star η Geminorum, William Herschel discovered Uranus, the first planet of the modern era, in 1781. Near the star δ Geminorum, Clyde Tombaugh found Pluto again in 1930.
|
||||
|
||||
|
|
|
|||
|
|
@ -3,9 +3,9 @@ name: Hydra
|
|||
created_by: skybber
|
||||
created_date: 2021-06-29 07:04:57.175158
|
||||
updated_by: skybber
|
||||
updated_date: 2021-06-29 07:04:57.175389
|
||||
updated_date: 2022-02-11 17:06:47.336378
|
||||
---
|
||||
After the star pattern of the Argo was split, Hydra became the largest constellation in the sky. It is an extraordinarily long constellation, stretching more than six hours in rectangular time, across 1/4 of the celestial sphere, roughly below the ecliptic. The head of Hydra borders the Little Dog on its western edge, so it can be observed even on winter evenings. The tail winds under the Sextant, Cup, Raven, Virgo, and ends up under the constellation Libra, which is a transitional constellation between spring and summer. One could almost say that when the head of Hydra sets, the tail is just rising. This is especially so in northern Europe. The head of Hydra is an attractive and striking stellar cluster of the constants δ, ε, ζ, η, ρ and σ Hydra (which have nothing in common with each other apart from this) lying north of the celestial equator, which fits within the field of view of most 7×50 triads. Its heart is formed by the red-orange star Alfard. The winding tail, best seen on clear dark nights because it contains mostly only 4-5mag stars, ends at the star 58 Hydra, southwest of σ Librae of Libra.
|
||||
After the star pattern of the Argo was split, Hydra became the largest constellation in the sky. It is an extraordinarily long constellation, stretching more than six hours in rectangular time, across 1/4 of the celestial sphere, roughly below the ecliptic. The head of Hydra borders the Canis Minor on its western edge, so it can be observed even on winter evenings. The tail winds under the Sextant, Crater, Corvus, Virgo, and ends up under the constellation Libra, which is a transitional constellation between spring and summer. One could almost say that when the head of Hydra sets, the tail is just rising. This is especially so in northern Europe. The head of Hydra is an attractive and striking stellar cluster of the constants δ, ε, ζ, η, ρ and σ Hydra (which have nothing in common with each other apart from this) lying north of the celestial equator, which fits within the field of view of most 7×50 binoculars. Its heart is formed by the red-orange star Alfard. The winding tail, best seen on clear dark nights because it contains mostly only 4-5mag stars, ends at the star 58 Hydra, southwest of σ Librae of Libra.
|
||||
|
||||
Although the constellation extends outside the Milky Way, its size means that it contains a variety of remarkable objects. Most of these are galaxies, of course, but many are brighter than 10mag. Hydra also contains some nice planetary nebulae, a couple of globular clusters and one nice open cluster. Three objects are also in Messier's catalogue: M48, M68 and M83. The constellation also contains the galaxy cluster Hydra, one of the densest galaxy clusters. Its brightest member is the galaxy NGC 3311 (10.9mag).
|
||||
|
||||
|
|
|
|||
|
|
@ -3,8 +3,8 @@ name: Lacerta
|
|||
created_by: skybber
|
||||
created_date: 2021-06-29 07:08:38.734450
|
||||
updated_by: skybber
|
||||
updated_date: 2021-06-29 07:08:38.734687
|
||||
updated_date: 2022-02-11 15:59:25.233786
|
||||
---
|
||||
A faint minor constellation of the northern sky, lying on the edge of the Milky Way between Swan, Pegasus, Cepheus and Andromeda. The northern part is circumpolar in our latitudes, southernmost except for northern Europe. This constellation consists only of a zigzag chain of faint stars denoted by Arabic numerals, so that the Lizard is rather faint. Since its northern half lies in the Milky Way, it contains several open clusters suitable for small telescopes. The constellation is interesting because three novae were observed in it in the 20th century: in 1910, 1936, and 1950. The 1936 one (CP Lacertae) flared in the northernmost part of the constellation and was known as "Nova Lacertae". It was discovered on June 16 of the same year by the Czech astronomer Záviš Bochníček, who also worked in Slovakia. At the time of the flare, it reached a brightness of 2.2mag in three days, which was 175,000 times its original brightness and 300,000 times the brightness of the Sun. It was a typical example of a so-called fast nova. To this day, it has become a faint white dwarf of 14.8mag, unobservable with ordinary amateur telescopes. It's 5,400 light years away. Nova 1910 (DI Lac) reached a brightness of 4.3mag. The faintest of these was the 1950 nova (DK Lac), which brightened to 5mag.
|
||||
A faint minor constellation of the northern sky, lying on the edge of the Milky Way between Cygnus, Pegasus, Cepheus and Andromeda. The northern part is circumpolar in our latitudes, southernmost except for northern Europe. This constellation consists only of a zigzag chain of faint stars denoted by Arabic numerals, so that the Lacerta is rather faint. Since its northern half lies in the Milky Way, it contains several open clusters suitable for small telescopes. The constellation is interesting because three novae were observed in it in the 20th century: in 1910, 1936, and 1950. The 1936 one (CP Lacertae) flared in the northernmost part of the constellation and was known as "Nova Lacertae". It was discovered on June 16 of the same year by the Czech astronomer Záviš Bochníček, who also worked in Slovakia. At the time of the flare, it reached a brightness of 2.2mag in three days, which was 175,000 times its original brightness and 300,000 times the brightness of the Sun. It was a typical example of a so-called fast nova. To this day, it has become a faint white dwarf of 14.8mag, unobservable with ordinary amateur telescopes. It's 5,400 light years away. Nova 1910 (DI Lac) reached a brightness of 4.3mag. The faintest of these was the 1950 nova (DK Lac), which brightened to 5mag.
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -3,8 +3,8 @@ name: Lepus
|
|||
created_by: skybber
|
||||
created_date: 2021-07-10 08:30:38.421929
|
||||
updated_by: skybber
|
||||
updated_date: 2021-07-10 08:30:38.422179
|
||||
updated_date: 2022-02-11 17:11:07.779446
|
||||
---
|
||||
A small but relatively prominent constellation in the southern sky, lying just below Orion. The constellation is not hard to find as it is a fairly distinctive grouping of brighter constellations. Because of its more southerly declination, however, we must wait for its culmination to best see its objects. For a triad or small telescope, however, only the globular cluster M79 and the blood-red crimson star of Hind are worth the effort to find.
|
||||
A small but relatively prominent constellation in the southern sky, lying just below Orion. The constellation is not hard to find as it is a fairly distinctive grouping of brighter constellations. Because of its more southerly declination, however, we must wait for its culmination to best see its objects. For a binocular or small telescope, however, only the globular cluster M79 and the blood-red Hind's Crimson Star are worth the effort to find.
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -3,8 +3,8 @@ name: Lyra
|
|||
created_by: skybber
|
||||
created_date: 2021-06-29 09:40:28.546107
|
||||
updated_by: skybber
|
||||
updated_date: 2021-06-29 09:40:28.546441
|
||||
updated_date: 2022-02-11 15:59:58.243475
|
||||
---
|
||||
Lyra is a typical, distinctive constellation of the northern summer sky, located on the edge of the Milky Way, between Hercules and the Swan, small but all the more interesting. The constellation is quite rich in interesting and pretty objects, especially for larger telescopes. The Ring Nebula - M57 - is a typical example of planetary nebulae. The star Sheliak is a representative of the group of occulting variable stars and the star ε Lyra is again one of the most observed multiple stars ever. Also attractive binaries for small telescopes are δ and ζ Lyra. At the junction of δ1 and δ2 Lyra, you may miss the inconspicuous open cluster Stephenson 1. It is made up of a loose cluster of 15 stars that can be observed in triads. It is one of our closest open clusters, so it is part of the spiral arm of Orion. For larger telescopes, NGC 6791 is again a beautiful open cluster and a chance to observe several galaxies.
|
||||
Lyra is a typical, distinctive constellation of the northern summer sky, located on the edge of the Milky Way, between Hercules and the Cygnus, small but all the more interesting. The constellation is quite rich in interesting and pretty objects, especially for larger telescopes. The Ring Nebula - M57 - is a typical example of planetary nebulae. The star Sheliak is a representative of the group of occulting variable stars and the star ε Lyra is again one of the most observed multiple stars ever. Also attractive binaries for small telescopes are δ and ζ Lyra. At the junction of δ1 and δ2 Lyra, you may miss the inconspicuous open cluster Stephenson 1. It is made up of a loose cluster of 15 stars that can be observed in triads. It is one of our closest open clusters, so it is part of the spiral arm of Orion. For larger telescopes, NGC 6791 is again a beautiful open cluster and a chance to observe several galaxies.
|
||||
|
||||
|
||||
|
|
@ -3,8 +3,8 @@ name: Monoceros
|
|||
created_by: skybber
|
||||
created_date: 2021-06-29 13:08:19.314132
|
||||
updated_by: skybber
|
||||
updated_date: 2021-06-29 13:08:19.314325
|
||||
updated_date: 2022-02-11 17:39:12.826154
|
||||
---
|
||||
A faint equatorial constellation composed of 4th magnitude stars that does not stand out much from its surroundings. It lies almost in the middle of the winter triangle of the bright stars Sirius, Betelgeuse, Procyon, between the Big Dog and the Little Dog in the Milky Way. The constellation is made up only of faint stars that fill the space between the much brighter constellations of the Big Dog, the Ship's Back, Hydra, the Little Dog, Gemini, and Orion. The Unicorn contains the very edge of the Milky Way, which is therefore relatively inconspicuous in the sky. You may find it rather monotonous and dull. However, the interstellar medium is much more transparent here than on the other side of the sky (Eagle and surroundings), so we can see much further and observe a variety of nebulae and star clusters. The most famous of these are the Rosette Nebula, the Cone Nebula, and the Hubble Variable Nebula - perhaps the most stunning of all to the visual observer. Of the open clusters, M50, NGC 2301 or the very rich NGC 2506 stand out. The almost forgotten star clusters Collinder 104 and 106 present a nice view in the triad.
|
||||
A faint equatorial constellation composed of 4th magnitude stars that does not stand out much from its surroundings. It lies almost in the middle of the winter triangle of the bright stars Sirius, Betelgeuse, Procyon, between the Canis Major and the Canis Minor in the Milky Way. The constellation is made up only of faint stars that fill the space between the much brighter constellations of the Canis Major, the Puppis, Hydra, the Little Dog, Gemini, and Orion. The Unicorn contains the very edge of the Milky Way, which is therefore relatively inconspicuous in the sky. You may find it rather monotonous and dull. However, the interstellar medium is much more transparent here than on the other side of the sky (Aquila and surroundings), so we can see much further and observe a variety of nebulae and star clusters. The most famous of these are the Rosette Nebula, the Cone Nebula, and the Hubble Variable Nebula - perhaps the most stunning of all to the visual observer. Of the open clusters, M50, NGC 2301 or the very rich NGC 2506 stand out. The almost forgotten star clusters Collinder 104 and 106 present a nice view in the binocular.
|
||||
|
||||
|
||||
|
|
@ -3,13 +3,13 @@ name: Orion
|
|||
created_by: skybber
|
||||
created_date: 2021-07-11 10:20:58.966916
|
||||
updated_by: skybber
|
||||
updated_date: 2021-07-11 10:20:58.967259
|
||||
updated_date: 2022-02-11 17:42:42.019301
|
||||
---
|
||||
Orion is the jewel of our winter sky and of all the constellations it is the most prominent, impossible to miss. The basic outline of the constellation is made up of seven stars. The striking line of three 2mag stars touching the celestial equator is the belt of Orion, lying in the central part of the constellation and peaking during late winter evenings and during the cold January. The stars of the belt are called Mintaka, Alnilam and Alnitak. Between them are a handful of 5-8mag stars, collectively referred to as Collinder 70. Orion's right arm is marked by the star Betelgeuse, the left by Bellatrix. Rigel is located in the right knee, Saiph in the left. Below the belt hangs a sword formed by a line of three stars. Around the star θ Orionis, which is a wide double star discernible in triads and whose western companion θ1 Orionis is a known multiple star of the Trapezium system, the Great Nebula in Orion (M42) is visible to the naked eye. Above the Betelgeuse-Rigel conjunction lies a triangle of three stars that represents the head of the hunter. On the left side the arc of fainter stars resembles a club, on the right a hunter's shield.
|
||||
Orion is the jewel of our winter sky and of all the constellations it is the most prominent, impossible to miss. The basic outline of the constellation is made up of seven stars. The striking line of three 2mag stars touching the celestial equator is the belt of Orion, lying in the central part of the constellation and peaking during late winter evenings and during the cold January. The stars of the belt are called Mintaka, Alnilam and Alnitak. Between them are a handful of 5-8mag stars, collectively referred to as Collinder 70. Orion's right arm is marked by the star Betelgeuse, the left by Bellatrix. Rigel is located in the right knee, Saiph in the left. Below the belt hangs a sword formed by a line of three stars. Around the star θ Orionis, which is a wide double star discernible in binoculars and whose western companion θ1 Orionis is a known multiple star of the Trapezium system, the Great Nebula in Orion (M42) is visible to the naked eye. Above the Betelgeuse-Rigel conjunction lies a triangle of three stars that represents the head of the hunter. On the left side the arc of fainter stars resembles a club, on the right a hunter's shield.
|
||||
|
||||
Orion extends on both sides of the equator, so it is visible in its entirety except for areas close to the poles from most viewing points on Earth. The constellation offers a wide and rich collection of cosmic attractions, whether for telescopes or small triers. The main exhibit is the Great Nebula in Orion, considered by many to be the most beautiful diffuse nebula in the sky and one of the most beautiful objects visible in binoculars. Many other nebulae can be seen in the infinitely large complex of gas and dust that covers most of Orion. The entire region is interspersed with the interstellar medium and is thought to be the birthplace of stars. Many of the double, triple and multiple systems are mostly blue-white in color because they are young stars that have only recently been born in the Orion complex.
|
||||
Orion extends on both sides of the equator, so it is visible in its entirety except for areas close to the poles from most viewing points on Earth. The constellation offers a wide and rich collection of cosmic attractions, whether for telescopes or small binoculars. The main exhibit is the Great Nebula in Orion, considered by many to be the most beautiful diffuse nebula in the sky and one of the most beautiful objects visible in binoculars. Many other nebulae can be seen in the infinitely large complex of gas and dust that covers most of Orion. The entire region is interspersed with the interstellar medium and is thought to be the birthplace of stars. Many of the double, triple and multiple systems are mostly blue-white in color because they are young stars that have only recently been born in the Orion complex.
|
||||
|
||||
In the northern part of the constellation, the two branches of the Milky Way from Gemini and Taurus merge, and further out the Milky Way begins to gradually expand. On the eastern side it reaches almost to Procyon of the Little Dog in lateral view, while the western edge passes by the star Betelgeuse and is slightly more contrasted. Slightly to the northwest, the sparse open cluster Collinder 69 is visible to the naked eye, giving a hazy impression. It features a striking triangle of brighter stars λ (3mag), π1 and π2 Orionis (4mag). According to some observers, a large emission nebula, Sharpless 2-264, is visible to the naked eye in the very dark sky around them. This is surrounded by a ring about seven degrees in diameter consisting of a system of dark nebulae. It is no coincidence that it is therefore nicknamed, especially in photographs, the Ring around λ Orionis. But the truth lies somewhere in the middle. The nebula itself is covered by a mass of indistinguishable stars far beyond the limit of visibility, and the surrounding dark nebulae bordering the star cloud only give the impression of an artificial ring.
|
||||
In the northern part of the constellation, the two branches of the Milky Way from Gemini and Taurus merge, and further out the Milky Way begins to gradually expand. On the eastern side it reaches almost to Procyon of the Canis Minor in lateral view, while the western edge passes by the star Betelgeuse and is slightly more contrasted. Slightly to the northwest, the sparse open cluster Collinder 69 is visible to the naked eye, giving a hazy impression. It features a striking triangle of brighter stars λ (3mag), π1 and π2 Orionis (4mag). According to some observers, a large emission nebula, Sharpless 2-264, is visible to the naked eye in the very dark sky around them. This is surrounded by a ring about seven degrees in diameter consisting of a system of dark nebulae. It is no coincidence that it is therefore nicknamed, especially in photographs, the Ring around λ Orionis. But the truth lies somewhere in the middle. The nebula itself is covered by a mass of indistinguishable stars far beyond the limit of visibility, and the surrounding dark nebulae bordering the star cloud only give the impression of an artificial ring.
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -3,9 +3,9 @@ name: Puppis
|
|||
created_by: skybber
|
||||
created_date: 2021-07-17 18:01:28.590886
|
||||
updated_by: skybber
|
||||
updated_date: 2021-07-17 18:01:28.591236
|
||||
updated_date: 2022-02-11 17:47:35.900917
|
||||
---
|
||||
A large constellation of the southern sky, the bulk of which rises above the horizon in our latitudes during the winter and spring months. The stern lies south of Procyon, below the Unicorn. It is bounded on the west by the Great Dog, on the east by the constellation of Compass, and can be observed entirely from the Mediterranean regions. The stern lies east and southeast of the Big Dog and the Milky Way passes through it. Because the dust clouds are relatively diffuse in this direction across the plane of our Galaxy, we can see outward to the galactic edge for long distances. As a result, the Boat's Back is very rich in diverse open clusters whose shape is very different at first glance. Some are very large and relaxed, more suitable for a triad, some are relatively large and very rich and suitable for a small telescope, and some are faint and distant, requiring a larger telescope to see them better. The brightest of these is M47, easily visible to the naked eye as a hazy patch to the east of Sirius, next to another cluster, M46.
|
||||
A large constellation of the southern sky, the bulk of which rises above the horizon in our latitudes during the winter and spring months. The stern lies south of Procyon, below the Monoceros. It is bounded on the west by the Canis Major, on the east by the constellation of Compass, and can be observed entirely from the Mediterranean regions. The stern lies east and southeast of the Canis Major and the Milky Way passes through it. Because the dust clouds are relatively diffuse in this direction across the plane of our Galaxy, we can see outward to the galactic edge for long distances. As a result, the Puppis is very rich in diverse open clusters whose shape is very different at first glance. Some are very large and relaxed, more suitable for a binocular, some are relatively large and very rich and suitable for a small telescope, and some are faint and distant, requiring a larger telescope to see them better. The brightest of these is M47, easily visible to the naked eye as a hazy patch to the east of Sirius, next to another cluster, M46.
|
||||
|
||||
|
||||
From the open cluster M93 (an inconspicuous fogspot), a bright, bright Milky Way belt stretches towards the interface of the Aft, Sails and Compass. The first brightening is in the north of M93, around the stars ξ and ο Pupp. The next one, slightly larger and brighter, is in the southern part, where a number of faint purchased stars can be seen. The clusters Collinder 121 and 132 appear to be merely rich star field densifications. To the west of the bright Milky Way belt is a fairly conspicuous dark region that continues on into the constellation Plachet and breaks up there. The area around the bright star π Puppy (2.7mag) looks very hazy and spotty. It is the brightest member of the large and poorly condensed open cluster Collinder 135, which is made up of 30 stars of a wide range of magnitudes in an area of one degree. At the northern boundary of the cluster lies a trio of bright fifth-magnitude blue stars. An even more striking brightening is found above the conjunction of the stars π and ζ Pupp. Individual stars also emerge from it. The brightest of these, the orange c Puppy (3.7mag), is part of the bright and relaxed cluster NGC 2451. In its vicinity lies another remarkable open cluster, NGC 2477 (5.7mag), very similar to M46 or NGC 7789 of Cassiopeia.
|
||||
From the open cluster M93 (an inconspicuous fogspot), a bright, bright Milky Way belt stretches towards the interface of the Puppis, Vela and Compass. The first brightening is in the north of M93, around the stars ξ and ο Pupp. The next one, slightly larger and brighter, is in the southern part, where a number of faint purchased stars can be seen. The clusters Collinder 121 and 132 appear to be merely rich star field densifications. To the west of the bright Milky Way belt is a fairly conspicuous dark region that continues on into the constellation Vela and breaks up there. The area around the bright star π Puppy (2.7mag) looks very hazy and spotty. It is the brightest member of the large and poorly condensed open cluster Collinder 135, which is made up of 30 stars of a wide range of magnitudes in an area of one degree. At the northern boundary of the cluster lies a trio of bright fifth-magnitude blue stars. An even more striking brightening is found above the conjunction of the stars π and ζ Pupp. Individual stars also emerge from it. The brightest of these, the orange c Puppy (3.7mag), is part of the bright and relaxed cluster NGC 2451. In its vicinity lies another remarkable open cluster, NGC 2477 (5.7mag), very similar to M46 or NGC 7789 of Cassiopeia.
|
||||
|
|
@ -3,9 +3,9 @@ name: Scutum
|
|||
created_by: skybber
|
||||
created_date: 2021-07-25 07:42:36.335796
|
||||
updated_by: skybber
|
||||
updated_date: 2021-07-25 07:42:36.335967
|
||||
updated_date: 2022-02-11 15:42:59.466143
|
||||
---
|
||||
A small constellation just south of the celestial equator, below the border of Eagle and the tail of the Serpent, whose brightest stars only reach 4mag, but it's not hard to find - at least under a slightly dark sky. Indeed, the shield lies in a rich part of the Milky Way, on the northwestern boundary, plus it is interspersed with the dark clouds of the Great Rift and projects a very bright star cloud - a large number of distant stars that the eye cannot distinguish and perceives as just a luminous cloud. Seen from Central Europe, it is the brightest brightening ever seen in the available part of the Milky Way.
|
||||
A small constellation just south of the celestial equator, below the border of Aquila and the tail of the Serpent, whose brightest stars only reach 4mag, but it's not hard to find - at least under a slightly dark sky. Indeed, the shield lies in a rich part of the Milky Way, on the northwestern boundary, plus it is interspersed with the dark clouds of the Great Rift and projects a very bright star cloud - a large number of distant stars that the eye cannot distinguish and perceives as just a luminous cloud. Seen from Central Europe, it is the brightest brightening ever seen in the available part of the Milky Way.
|
||||
|
||||
The cloud in the Shield shows great contrast to its surroundings. It is in this region that you will notice the striking combination of bright star fields with the extremely dark dust clouds of the Great Rift located in the foreground, creating remarkable bays directly in and around the cloud. Particularly striking is the one-degree Barnard 103 nebula, lying between the α and β Scuti stars. In addition, many dark regions of dust are distributed throughout the constellation and have found their numbers in the Barnard Catalogue of Dark Nebulae. Probably the most striking complex (B103, B104, B110, B111 and B113) extends from the Great Rift into the northern parts of the constellation, and its contrast with the surrounding star field is really striking in the triad. Look for another large dark nebula over one and a half degrees long during good conditions just southeast of γ Sct, in a field crowded with faint stars (B312).
|
||||
|
||||
|
|
|
|||
|
|
@ -3,6 +3,8 @@ name: Vulpecula
|
|||
created_by: skybber
|
||||
created_date: 2022-02-07 15:15:09.045046
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-07 15:15:09.045364
|
||||
updated_date: 2022-02-11 15:51:20.915636
|
||||
---
|
||||
A small and faint constellation of the northern sky south of the Swan, just off Albireo, north of the Arrow and the Dolphin. The Fox lies in the eastern stream of the summer Milky Way. Although the latter is not exceptionally bright in this region, it contains an abundant surplus of 7th to 10th magnitude stars. The star clouds are good for sweeping through with a trier, and there are some nice objects to be discovered. The constellation contains a relatively large number of open clusters. The most impressive in the telescope's field of view is NGC 6940 , while the well-known open cluster Collinder 399, simply called "The Arm", is for any binoculars. There are also relatively bright nebulae, binaries, triple stars and, at the very eastern edge of the constellation, a few galaxies. The most famous object, however, is the planetary nebula M27 , one of the largest and brightest planetary nebulae, amazing in any telescope, from the Trident to the 500mm Dobsonian. Even with the smallest telescope, you can see a hint of its shape, from which it is also called
|
||||
A small and faint constellation of the northern sky south of the Swan, just off Albireo, north of the Sagitta and the Dolphin. The Vulpecula lies in the eastern stream of the summer Milky Way. Although the latter is not exceptionally bright in this region, it contains an abundant surplus of 7th to 10th magnitude stars. The star clouds are good for sweeping through with a binocular, and there are some nice objects to be discovered. The constellation contains a relatively large number of open clusters. The most impressive in the telescope's field of view is NGC 6940 , while the well-known open cluster Collinder 399, simply called "The Arm", is for any binoculars. There are also relatively bright nebulae, binaries, triple stars and, at the very eastern edge of the constellation, a few galaxies. The most famous object, however, is the planetary nebula M27 , one of the largest and brightest planetary nebulae, amazing in any telescope, from the binocular to big Dobsonian. Even with the smallest telescope, you can see a hint of its shape, from which it is also called - Dumbbell.
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,9 @@
|
|||
---
|
||||
name: Barnard's Star
|
||||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:58:40.395982
|
||||
---
|
||||
This interesting red star, visible only through binoculars, moves the fastest of all against the background of more distant stars - it moves 10.31" across the sky per year, or the diameter of the Moon in 180 years. It is therefore sometimes referred to as Barnard's Arrow. It has the largest proper motion of any known star, discovered by E. Barnard in 1916, and is the second closest star to our Sun after the α Centauri system, separated from it by only 5.9ly, which is also the main reason for its rapid movement across the sky. Barnard's Arrow is still getting closer to us, in the year 9700, when it will be in the head of Draco, it will be only 3.8 light years away! Recording its movements could be a very interesting activity. By plotting its position in the star field at high magnification at least once a year, we can see for ourselves.
|
||||
|
|
@ -1,8 +0,0 @@
|
|||
---
|
||||
name: Barnardova hviezda
|
||||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
---
|
||||
|
|
@ -3,6 +3,7 @@ name: Burnham 441
|
|||
constellation: Vul
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:47:54.870937
|
||||
---
|
||||
a 100 mm telescope might have been enough to see this double star. It presents itself as a colour contrast of gold and blue components. The difference in magnitude is large, with the gold component reaching 6.2mag, the blue only 10.7mag. It lies at a distance of 5.9".
|
||||
|
|
@ -3,6 +3,7 @@ name: Herschel 5003
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:40:24.238580
|
||||
---
|
||||
a triple star consisting of two red-orange stars, the brighter 5.2mag being the redder. The fainter 6.9mag star is 5.5" away. Another but very faint 13mag guide is found at a distance of 26.2" and can be resolved during a good night. These triple stars lie in a nice field of the Milky Way.
|
||||
|
|
@ -3,6 +3,7 @@ name: Herschel 84
|
|||
constellation: Sge
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:32:04.889928
|
||||
---
|
||||
a binary star consisting of a main orange (6.5mag) and a minor blue component (8.9mag) at a distance of 28.2". In at least a 100mm telescope and higher magnification, probably the most beautiful binary in the constellation.
|
||||
|
|
@ -3,6 +3,7 @@ name: Keplerova supernova
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:57:44.864694
|
||||
---
|
||||
the last galactic supernova, which exploded on September 9, 1604. It is named after a famous German astronomer who observed it in those days. It was visible to the naked eye for 12 months, and for several weeks its brightness of -2.5 mag surpassed even the planet Jupiter. Johannes Kepler and David Fabricius pinpointed its position with such accuracy that the German-born American astronomer Walter Baade was able to identify a faint nebula, a supernova remnant, in the same place in 1943. The star itself is now fainter than 19mag and can only be observed with the largest telescopes. The Hubble Space Telescope has detected its remnant.
|
||||
|
|
@ -3,6 +3,7 @@ name: Lacaille 9352
|
|||
constellation: PsA
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:26:29.751258
|
||||
---
|
||||
a red dwarf of visual magnitude 7.4. It shows the fourth fastest known proper motion after Barnard's and Kapteyn's stars and the Great Bear star Groombridge 1830, Lacaille 9352. In one year, this star will have moved 6.9", and by 2100 it will be in the neighboring constellation of Sculptor. It lies at a distance of just 10.7 ly.
|
||||
|
|
@ -3,6 +3,7 @@ name: RR Lyrae
|
|||
constellation: Lyr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:52:11.152132
|
||||
---
|
||||
this star, lying on the border with the Cygnus, invisible to the naked eye, is a representative of an important class of variable stars whose brightness varies in a short period. They are old stars found mainly around the Galactic centre and in globular clusters, the oldest formations in the galaxy. RR Lyra pulses periodically, like Delta Cephei, but its period is less than a day - 0.567 days. In that time - 13 hours and 36 minutes - the apparent brightness varies from 7mag to 8.1mag. The cycle can therefore be observed (from some areas) in virtually one night. At its maximum it is white, at its minimum it takes on a yellowish tint.
|
||||
|
|
@ -3,6 +3,7 @@ name: RS Oph
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:56:54.319363
|
||||
---
|
||||
a recurrent nova that flared up successively in 1898, 1933, 1958, 1967 and 1985. At minimum it has a brightness of 11.8mag, and at outburst sometimes as high as 4.3mag.
|
||||
|
|
@ -3,6 +3,7 @@ name: Struve 2306
|
|||
constellation: Sct
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:45:46.159098
|
||||
---
|
||||
a triple star observed 1.75 degrees WNW of the star γ Scuti. The AB pair consists of a golden (7.9mag) and a bluish component (8.6mag) that lie 10.2" apart. The guide is also a tight pair that requires quite high magnification to resolve.
|
||||
|
|
@ -3,6 +3,7 @@ name: Struve 2373
|
|||
constellation: Sct
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:46:03.623112
|
||||
---
|
||||
a binary star located in the Milky Way's rich star field. It is made up of two yellow components of 7.2mag and 8.2mag, which lie at a distance of 4.2" from each other. A reasonable minimum for resolution would be a telescope with a 10 cm objective lens diameter.
|
||||
|
|
@ -3,6 +3,7 @@ name: Struve 2455
|
|||
constellation: Vul
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:48:17.803035
|
||||
---
|
||||
a triple star, an attractive pair of one white and two bluish components in a 100 mm telescope. The brightest components (7.4mag and 8.5mag) lie at a distance of 6.6". Half a degree to the SSV, the binary Struve 2457 is in the same field of view, consisting of a white 7.5mag and a bluish 9mag component lying at a mutual distance of 10.3".
|
||||
|
|
@ -3,6 +3,7 @@ name: Struve 2470/2474
|
|||
constellation: Lyr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:51:09.453716
|
||||
---
|
||||
another double binary in the constellation, observed northeast of γ Lyra. The two main stars lie just over 10' apart. In at least a 10 cm telescope, Struve 2470 resolves into two stars that lie 13.4" apart: a white and a light blue, the former with a brightness of 6.6mag, the latter with a brightness of 8.6mag. The bright yellow components of Struve 2474 lie at a distance of 16.2" and have brightnesses of 6.7mag and 8.8mag, respectively.
|
||||
|
|
@ -3,6 +3,7 @@ name: Struve 2540
|
|||
constellation: Vul
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:48:40.455418
|
||||
---
|
||||
the triple stars. In the 100/150 mm instrument, the relatively tight pair (5.1") consists of an unequally bright white 7.3mag and a bluish 8.8mag component. The 12.4mag guide lies 147" away.
|
||||
|
|
@ -3,6 +3,7 @@ name: Struve 2653
|
|||
constellation: Vul
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:47:33.762023
|
||||
---
|
||||
The double star, in a telescope with a lens diameter of up to 150 mm, is a very close pair of unequally bright yellow-white stars (6.9mag, 9.7mag) that require adequate magnification for resolution. They lie only 2.6" apart.
|
||||
|
|
@ -3,6 +3,7 @@ name: Struve 2793
|
|||
constellation: Equ
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:42:19.555809
|
||||
---
|
||||
an easily distinguishable double star even for small telescopes. The main component is yellow (7.8mag) and the guide is bluish (8.5mag). It lies at a distance of 26.6". The main star has another guide at a distance of only 0.4", but it does not resolve using high magnification.
|
||||
|
|
@ -3,6 +3,7 @@ name: V Sge
|
|||
constellation: Sge
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:32:29.986784
|
||||
---
|
||||
probably once a "new star", now almost at the limit of visibility even in the triad. Almost every night it is differently bright, changing magnitude erratically from 8.6 to 13.9.
|
||||
|
|
@ -3,6 +3,7 @@ name: W a X Sgr
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:39:47.585091
|
||||
---
|
||||
cepheid, which change their brightness with a weekly period from fourth to fifth magnitude. X SGR lies almost on the boundary with the constellation Hadonose. It reaches 4.3mag at maximum and 4.9mag at minimum. Its period is 7.012 days. W SGR fluctuates between 4.3mag and 5mag with a period of 7.595 days.
|
||||
|
|
@ -3,6 +3,7 @@ name: ρ Oph
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:55:34.377970
|
||||
---
|
||||
a binary star 3° northwest of Antares, consisting of blue components of 5.3mag and 6mag brightness at a distance of 3.1" (4.59mag). The area around them is of interest to photographers. To the west is the elongated dark Barnard 42 nebula, which appears silhouetted against the beautiful gas-dust complex IC 4604 , which is just irradiated by the star ρ Ophiuchi. However, the nebula has a very faint areal brightness.
|
||||
|
|
@ -3,6 +3,7 @@ name: λ Oph
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:53:28.216905
|
||||
---
|
||||
a nice binary star with a period of 130 years. Its 4.2mag and 5.2mag components are located 1.5" apart. One of them is white, the other light yellow. At a greater distance, we can also observe two more, probably optical companions of 9.5mag and 11.1mag.
|
||||
|
|
@ -3,6 +3,7 @@ name: 36 Oph
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:55:58.780616
|
||||
---
|
||||
a beautiful double star of equally bright orange 5.1mag components, distinguishable at 4.9" in smaller telescopes. At a greater distance from it, an orange companion of 8.1mag brightness is still visible to the northwest.
|
||||
|
|
@ -3,6 +3,7 @@ name: Ras Alhague (α Oph)
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:53:05.674599
|
||||
---
|
||||
with its 2nd magnitude, it is the brightest star in the constellation. Ras Alhague lies at the northern edge of the constellation and is not very far from the star with a similar name, α Herculis, the main star of Hercules. It is a yellow-white giant 48 light years away. This distance is increasing due to its 8 km per second motion.
|
||||
|
|
@ -3,6 +3,7 @@ name: τ Oph
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:56:30.177615
|
||||
---
|
||||
a binary star that is made up of a nice but close pair of yellow stars of 5.2mag and 5.9mag brightness, with a period of 280 years. They are currently about 1.7" apart, but getting smaller. At a distance of 100" we can find a companion bright 9.3mag.
|
||||
|
|
@ -3,6 +3,7 @@ name: 70 Oph
|
|||
constellation: Oph
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:54:01.341332
|
||||
---
|
||||
a binary star consisting of two stars of brightness 4.2mag and 6mag with a mutual orbital period of 87 years. The orbit has such a spatial position that the apparent angular separation of the two stars changes significantly during the orbital period. The smallest separation (1.5") was reached by the two stars in 1989 and 1990. By the turn of the millennium, their separation had increased to 3.9", which was enough for a telescope with a 5 cm diameter lens. In 2005, the distance was increased to 5". The two stars will reach their greatest ever separation of 6.8" in 2024.
|
||||
|
|
@ -3,6 +3,7 @@ name: η Sgr
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:37:01.486258
|
||||
---
|
||||
an easy-to-observe binary: the magnitudes of the components are 3.2 and 7.8 and lie at distances of 3.6". The brighter component is red-orange, the fainter one is white. At a distance of 93" lies a 10mag star, and at a distance of 33" a 13mag star.
|
||||
|
|
@ -3,6 +3,7 @@ name: Kaus Australis (ε Sgr)
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:36:36.184446
|
||||
---
|
||||
the brightest star in the constellation (1.85mag). It is located in the southern part of the bow and reaches a maximum height of 7 degrees above the southern horizon at the time of culmination. It is white in colour. At a distance of 125 light years it shines like 250 suns. It is also an optical double star, and to the northwest about 3.3 arc minutes is a seventh magnitude guide star, which we can discover by binocular.
|
||||
|
|
@ -3,6 +3,7 @@ name: 21 Sgr
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:38:14.269343
|
||||
---
|
||||
An unequally bright and contrasting double star of orange (4.9mag) and bluish component (7.4mag), which lie only 1.8" apart, so they are not easily distinguishable with a small telescope.
|
||||
|
|
@ -3,6 +3,7 @@ name: Vega (α Lyr)
|
|||
constellation: Lyr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:44:01.932942
|
||||
---
|
||||
This star makes the constellation unmissable, as bluish Vega is the fifth brightest star in the sky (0.04mag). Together with the stars Deneb in Cygnus and Altair in Aquila, Vega forms the Summer Orientation Triangle. Its distance from Earth is determined to be 25ly and its luminosity is 40 times that of our Sun, absolute magnitude = +0.5. The two faint companions do not form part of a physical system.
|
||||
|
|
@ -3,6 +3,7 @@ name: δ Sct
|
|||
constellation: Sct
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:44:32.267776
|
||||
---
|
||||
this star is the prototype of a class of variable stars whose brightness changes little due to repeated decreasing and increasing diameter with a period of a few hours. Over a period of 4.65 hours, its brightness fluctuates between 4.9mag and 5.2mag. δ Scuti also has a 52.6" blue guide star at 52.6" distance that contrasts nicely with the main, bright yellow star.
|
||||
|
|
@ -3,6 +3,7 @@ name: ε Lyrae
|
|||
constellation: Lyr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:50:26.574802
|
||||
---
|
||||
A "double binary", a multiple system near Vega in which we can already distinguish two components with our sharp eyes. In the binocular, these components are clearly distinguishable, brightnesses of 5.1mag and 5.4mag at a distance of 208", which, when observed with at least a 60 mm telescope and higher magnification, disintegrate into double stars (guides ε1 6.5mag and ε2 5.3mag). The mutual distance of one pair is 2.6", the other 2.3", and their orbital periods are determined to be 1 166 and 585 years, respectively. The distances are 162ly and 156ly.
|
||||
|
|
@ -3,6 +3,7 @@ name: R Scuti
|
|||
constellation: Sct
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:45:13.352809
|
||||
---
|
||||
Dark yellow giant, semi-regular variable star of the RV Tauri type, one degree south of β Scuti (4.2 mm). Its brightness varies from 4.9mag to 8.2mag over a period of five months - a main period of 140 days. The cause of the deep minimum may be carbon particles formed in the star's atmosphere. It is within range of the triad, being the brightest variable star of the RV Tauri type: it appears to oscillate in at least two overlapping periods, and at its maximum it is at least 8,000 times more luminous than the Sun. It often changes brightness between 5-6mag, but after four or five such cycles it drops to 8th magnitude. It is about 2,500 light years away. Similar stars have been found not only in parts of the Milky Way, but also in globular clusters, whether in the very centre of the Galaxy.
|
||||
|
|
@ -3,6 +3,7 @@ name: Sheliak (β Lyr)
|
|||
constellation: Lyr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:44:31.113620
|
||||
---
|
||||
is a representative of the occultation variable beta Lyra type stars. The two stars orbiting each other have the shape of a rotating ellipsoid. The star changes brightness from 3.4mag to 4.4mag over a period of 12.908 days. Within the period, there is also a secondary minimum at which the brightness drops by 0.4mag. Suitable comparison stars are γ (3.25mag) and κ LYR (4.33mag).
|
||||
|
|
@ -3,6 +3,7 @@ name: δ Lyr
|
|||
constellation: Lyr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:46:33.846352
|
||||
---
|
||||
an easily observable optical binary at a distance of 620", one component of which is colored strongly red (with slightly variable brightness ranging from 4.3 to 4.4mag) and the other pale blue (5.5mag). They can be distinguished by a triad.
|
||||
|
|
@ -3,6 +3,7 @@ name: R Lyrae
|
|||
constellation: Lyr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-10 16:44:55.475423
|
||||
---
|
||||
the striking red-orange star visible to the naked eye is a semi-regular variable star whose brightness varies from 3.8mag to 5mag over approximately 46 days.
|
||||
|
|
@ -3,6 +3,7 @@ name: RY Sgr
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:39:18.136923
|
||||
---
|
||||
similar to R Coronae Borealis, because it suddenly and unexpectedly changes its brightness from eighth to fourteenth magnitude. It has no precise period and is the brightest star of this type after R Coronae Borealis itself. Its brightness drops unexpectedly when carbon soot builds up in the atmosphere.
|
||||
|
|
@ -3,6 +3,7 @@ name: U Sge
|
|||
constellation: Sge
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:31:33.817351
|
||||
---
|
||||
over a period of 3.38 days, the brightness of this occultation variable star of the Algol type varies from 6.6mag to 9.2mag. It is a suitable object for small telescopes because the changes near the beginning and end of the minimum can be seen within a few minutes. The eclipse, which occurs once every three and a half days or so, lasts about an hour and forty minutes. The main component is the blue star of the main sequence, while the larger but fainter guide is the yellow giant.
|
||||
|
|
@ -3,6 +3,7 @@ name: Arkab (β Sgr)
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:37:34.043226
|
||||
---
|
||||
a wide optical binary suitable for binocular observations. The 3.9mag main component also has an 8th magnitude companion at 28.4".
|
||||
|
|
@ -3,6 +3,7 @@ name: 54 Sgr
|
|||
constellation: Sgr
|
||||
created_by: 8mag
|
||||
created_date: 2022-01-21 17:00:00
|
||||
updated_by: 8mag
|
||||
updated_date: 2022-01-21 17:00:00
|
||||
updated_by: skybber
|
||||
updated_date: 2022-02-11 15:38:36.505178
|
||||
---
|
||||
nice triple stars easily distinguishable in small telescopes. The brightest component is dark yellow (5.4mag), the next is pale blue (11.9mag) and the third is yellowish (8.9mag). Pair spacing AB is 38", component spacing AC = 45.6".
|
||||
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Reference in New Issue