Stephenson 1 (Open cluster)
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Right ascension: 18h 55m
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Declination: 36° 53'
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Constellation: Lyra
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Date/time: 2012.07.15 22:30 UT
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Equipment: 4.5" f/8 Newtonian
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FoV: 33'
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Magnification and filter(s): 100x
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Seeing: 4/10
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Transparency: 4/5
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Location: Lipótfa, Zselic, Hungary
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Observer: Ferenc Lovró
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Description:
Very sparsely populated cluster around the bright star of Delta Lyrae. Apart from that, three other bright stars dominate the FoV. No diffuse background can be detected.
SQM reading: 21.42 MPSAS, 8°C (freezing cold for a midsummer day ;) )
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Hi-resolution image: [ reversed sketch | original sketch ]
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