Daljnogled (ozvezdje)

Daljnogled

Ozvezdje
Seznam zvezd v ozvezdju Daljnogled
Latinsko ime	Telescopium
Kratica	Tel
Rodilnik latinskega imena	Telescopii
Simbolika	daljnogled/teleskop
Rektascenzija	19h {{{2}}}m
Deklinacija	−50°
Družina	La Caille
Kvadrant	SQ4
Površina	252 (°)² (57. po velikosti)
Glavne zvezde	2
Bayer/Flamsteed zvezde	13
Zvezde s planeti	0
Zvezde svetlejše kot 3,00m	0
Zvezde znotraj 10,00 pc (32,62 ly)	2
Najsvetlejša zvezda	α Tel (m)
Najbližja zvezda	Gliese 754 starmagnitude=3,49 (19,35 sv.l., 5,93 pc)
Messierova telesa	0
Sosednja ozvezdja	Oltar Južna krona Indijanec Mikroskop (kot) Pav Strelec
Vidno na širinah med +40° in −90°. Najprimernejše opazovanje ob 21:00 - avgust.

Daljnogled, tudi Teleskop je malo ozvezdje na južni nebesni polobli, eno izmed dvanajstih ozvezdij, ki jih je v 18. stoletju poimenoval francoski astronom Nicolas-Louis de Lacaille in eno izmed več znanstvenih instrumentov. Daljnogled je bil kasneje po površini zelo zmanjšan, kar sta storila Francis Baily in Benjamin Gould.

Najsvetlejša zvezda v ozvezdju je Alfa Daljnogleda, modrobela podorjakinja z navidezno magnitudo 3,5, ki ji sledi oranžna orjakinja Zeta Daljnogleda z magnitudo 4,1. Eta in PZ Daljnogleda sta dva mlada zvezdna sistema z zvezdnimi diski in spremljevalko rjavo pritlikavko. Daljnogled vsebuje dve nenavadni zvezdi z zelo malo vodika, ki sta morda produkt trčenja dveh belih pritlikavk: PV Daljnogleda, znana tudi kot HD 168476, je vroča modra ekstremna helijeva zvezda, medtem ko je RS Daljnogleda spremenljivka tipa R Severne krone. RR Daljnogleda je kataklizmična spremenljivka, ki je leta 1948 z 6. magnitudo zasvetela kot nova.

Karakteristike

Ozvezdje Daljnogled, vidno s prostim očesom

Majhno ozvezdje Daljnogled meji na severu na Strelca in Južno krono, na zahodu na Oltar, na jugu na Pava, na vzhodu na Indijanca, ima pa tudi skupen kot z Mikroskopom na severovzhodu. Tričrkovno poimenovanje, ki ga je uvedla Mednarodna astronomska zveza leta 1922, je "Tel". Uradne meje ozvezdja, ki jih je postavil Eugène Delporte leta 1930, so definirane štirikotno. V ekvatorskem nebesnem sistemu so meje med rektascenzijama 18^h 09,1^m in 20^h 29,5^m, drugi dve meji pa sta med deklinacijama −45,09° in −56,98°. Celotno ozvezdje je vidno opazovalcev, ki so južneje od širine 33°N.

Glej tudi

• Herschelov teleskop

Sklici

Citati

Viri

 

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On-line viri

• "AAVSO Light Curve Generator". AAVSO. Arhivirano iz prvotnega spletišča dne 2013-09-11. Pridobljeno 5 September 2013.
• Otero, Sebastian A. (31 July 2006). "BL Telescopii". AAVSO Website. American Association of Variable Star Observers. Pridobljeno 14 July 2014.
• Otero, Sebastian A. (13 February 2014). "RS Telescopii". AAVSO Website. American Association of Variable Star Observers. Pridobljeno 3 July 2014.
• Otero, Sebastian A. (11 November 2011). "RX Telescopii". AAVSO Website. American Association of Variable Star Observers. Pridobljeno 26 June 2014.
• Watson, Christopher (3 May 2013). "NSV 12783". AAVSO Website. American Association of Variable Star Observers. Pridobljeno 2 July 2014.
• Bortle, John E. (February 2001). "The Bortle Dark-Sky Scale". Sky & Telescope. Sky Publishing Corporation. Pridobljeno 29 November 2014.
• "Telescopium, constellation boundary". The Constellations. International Astronomical Union. Pridobljeno 29 September 2012.
• Kaler, Jim. "Alpha Telescopii". Stars. University of Illinois. Pridobljeno 29 September 2012.
• Ridpath, Ian. "Lacaille's Southern Planisphere of 1756". Star Tales. self-published. Pridobljeno 2 July 2014.
• Ridpath, Ian. "Constellations: Lacerta–Vulpecula". Star Tales. self-published. Pridobljeno 21 June 2014.
• Ridpath, Ian (1988). "Telescopium". Star Tales. Pridobljeno 29 September 2012.
• "Epsilon Telescopii – Star in Double System". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 30 September 2012.
• "Eta Telescopii". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 2 July 2014.
• "HD 169405". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 26 June 2014.
• "HD 181327". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 2 July 2014.
• "HR 6934". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 29 September 2012.
• "HR 6938". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 29 September 2012.
• "Iota Telescopii". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 26 June 2014.
• "Kappa Telescopii". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 30 September 2012.
• "LHS 60 - High Proper Motion Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 11 November 2014.
• Rivinius, Th.; Baade, D.; Hadrava, P.; Heida, M.; Klement, R. (May 2020). "A naked-eye triple system with a nonaccreting black hole in the inner binary". Astronomy & Astrophysics. 637 (L3): 11. doi:10.1051/0004-6361/202038020.