Daljnogled (ozvezdje)
| Ozvezdje | |
 | |
| 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 | |
| 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
[uredi | uredi kodo]
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".[1] Uradne meje ozvezdja, ki jih je postavil Eugène Delporte leta 1930, so definirane štirikotno. V ekvatorskem nebesnem sistemu so meje med rektascenzijama 18h 09,1m in 20h 29,5m, drugi dve meji pa sta med deklinacijama −45,09° in −56,98°.[2] Celotno ozvezdje je vidno opazovalcev, ki so južneje od širine 33°N.[3][a]
Glej tudi
[uredi | uredi kodo]Opombe
[uredi | uredi kodo]Sklici
[uredi | uredi kodo]Citati
Viri
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{{navedi časopis}}: Vzdrževanje CS1: samodejni prevod datuma (povezava) - Innanen, K. A.; Flynn, C. (2010). »The Radial Velocity, Space Motion, and Galactic Orbit of GJ 754«. Journal of the Royal Astronomical Society of Canada. 104 (6): 223–24. Bibcode:2010JRASC.104..223I.
- Jenkins, J.S.; Pavlenko, Y.V.; Ivanyuk, O.; Gallardo, J.; Jones, M.I.; Day-Jones, A.C.; Jones, H.R.A.; Ruiz, M.T.; Pinfield, D.J.; Yakovina, L. (2012). »Benchmark Cool Companions: Ages and Abundances for the PZ Telescopii System«. Monthly Notices of the Royal Astronomical Society. 420 (4): 3587–98. arXiv:1111.7001. Bibcode:2012MNRAS.420.3587J. doi:10.1111/j.1365-2966.2011.20280.x.
- Jenkins, J.S.; Jones, H.R.A.; Goździewski, K.; Migaszewski, C.; Barnes, J.R.; Jones, M.I.; Rojo, P.; Pinfield, D.J.; Day-Jones, A.C.; Hoyer, S. (2009). »First Results From the Calan–Hertfordshire Extrasolar Planet Search: Exoplanets and the Discovery of an Eccentric Brown Dwarf in the Desert«. Monthly Notices of the Royal Astronomical Society. 398 (2): 911–17. arXiv:0905.2985. Bibcode:2009MNRAS.398..911J. doi:10.1111/j.1365-2966.2009.15097.x.
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- Machacek, M. E.; O'Sullivan, E.; Randall, S. W.; Jones, C.; Forman, W. R. (2010). »The Mysterious Merger of NGC 6868 and NGC 6861 in the Telescopium Group«. The Astrophysical Journal. 711 (2): 1316–1332. arXiv:1001.2567. Bibcode:2010ApJ...711.1316M. doi:10.1088/0004-637X/711/2/1316.
{{navedi časopis}}: Vzdrževanje CS1: ref podvaja privzeto (povezava) - McDonald, I.; Zijlstra, A.A.; Boyer, M.L. (2012). »Fundamental Parameters and Infrared Excesses of Hipparcos Stars«. Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
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{{navedi časopis}}: Vzdrževanje CS1: ref podvaja privzeto (povezava) Vzdrževanje CS1: samodejni prevod datuma (povezava) - Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Blacksburg, Virginia: The McDonald & Woodward Publishing Company. ISBN 978-0-939923-78-6.
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On-line viri
- »AAVSO Light Curve Generator«. AAVSO. Arhivirano iz prvotnega spletišča dne 11. septembra 2013. Pridobljeno 5. septembra 2013.
- Otero, Sebastian A. (31. julij 2006). »BL Telescopii«. AAVSO Website. American Association of Variable Star Observers. Pridobljeno 14. julija 2014.
- Otero, Sebastian A. (13. februar 2014). »RS Telescopii«. AAVSO Website. American Association of Variable Star Observers. Pridobljeno 3. julija 2014.
- Otero, Sebastian A. (11. november 2011). »RX Telescopii«. AAVSO Website. American Association of Variable Star Observers. Pridobljeno 26. junija 2014.
- Watson, Christopher (3. maj 2013). »NSV 12783«. AAVSO Website. American Association of Variable Star Observers. Pridobljeno 2. julija 2014.
- Bortle, John E. (Februar 2001). »The Bortle Dark-Sky Scale«. Sky & Telescope. Sky Publishing Corporation. Pridobljeno 29. novembra 2014.
- »Telescopium, constellation boundary«. The Constellations. International Astronomical Union. Pridobljeno 29. septembra 2012.
- Kaler, Jim. »Alpha Telescopii«. Stars. University of Illinois. Pridobljeno 29. septembra 2012.
- Ridpath, Ian. »Lacaille's Southern Planisphere of 1756«. Star Tales. self-published. Pridobljeno 2. julija 2014.
- Ridpath, Ian. »Constellations: Lacerta–Vulpecula«. Star Tales. self-published. Pridobljeno 21. junija 2014.
- Ridpath, Ian (1988). »Telescopium«. Star Tales. Pridobljeno 29. septembra 2012.
- »Epsilon Telescopii – Star in Double System«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 30. septembra 2012.
- »Eta Telescopii«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 2. julija 2014.
- »HD 169405«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 26. junija 2014.
- »HD 181327«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 2. julija 2014.
- »HR 6934«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 29. septembra 2012.
- »HR 6938«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 29. septembra 2012.
- »Iota Telescopii«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 26. junija 2014.
- »Kappa Telescopii«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 30. septembra 2012.
- »LHS 60 - High Proper Motion Star«. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pridobljeno 11. novembra 2014.
- Rivinius, Th.; Baade, D.; Hadrava, P.; Heida, M.; Klement, R. (Maj 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.
