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NGC 6811 (Open cluster)
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Right ascension: 19h 37m
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Declination: 46° 25'
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Constellation: Cygnus
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Date/time: 2014.08.17 22:45 UT
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Equipment: 12" f/5 Newtonian
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FoV: 37'
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Magnification and filter(s): 100x
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Seeing: 5/10
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Transparency: 3/5
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SQM: 20.90 m/as2
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Temperature: 9°C
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Humidity: moderate
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Wind: none
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Sight: 4 - lots of details, very interesting, unique look
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Difficulty: 3 - moderately visible, dark adaptation needed, averted vision might add to details
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Position: 3 - moderate, some starhopping needed
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Location: Nádasdladány, Hungary
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Observer: Ferenc Lovró
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Description:
Middle-sized open cluster, nicely separating from its background, which looks grainy because of the miriads of unseen Milkyway stars. This rich object contains several tentacles of stars. To the West of this OC I see an asterism of bright stars, one of its members can be seen on the topmost part of the sketch.
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Hi-resolution image: [ reversed sketch | original sketch ]
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gmail*com.
ikonra kattintva magyarul is olvashatod az észlelést.
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