HIP 98298 (Various/other)
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Also known as: Cygnus X-1
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Right ascension: 19h 59m
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Declination: 35° 15'
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Constellation: Cygnus
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Date/time: 2015.11.01 18:15 UT
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Equipment: 12" f/5 Newtonian
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FoV: 13'
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Magnification and filter(s): 250x
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Seeing: 6/10
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Transparency: 4/5
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SQM: 21.01 m/as2
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Temperature: 3°C
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Humidity: low
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Wind: none
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Sight: 3 - definite details, interesting look
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Difficulty: 1 - instantly visible, no dark adaptation or averted vision needed
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Position: 2 - easy, bright star nearby
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Location: Talpa Minor Observatory
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Observer: Ferenc Lovró
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Description:
Being one of the strongest X-ray sources on our sky, this star hides a really dark companion: the first ever suspected black hole, also know as Cygnus X-1.
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Hi-resolution image: [ reversed sketch | original sketch ]
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