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NGC 744 (Open cluster)
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Right ascension: 02h 00m
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Declination: 55° 34'
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Constellation: Perseus
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Date/time: 2017.10.19 19:30 UT
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Equipment: 12" f/5 Newtonian
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FoV: 21'
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Magnification and filter(s): 167x
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Seeing: 6/10
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Transparency: 3/5
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SQM: 21.31 m/as2
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Temperature: 7°C
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Humidity: high
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Wind: none
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Sight: 2 - minor details, somewhat interesting
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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: Talpa Minor Observatory
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Observer: Ferenc Lovró
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Description:
Small open cluster. The brightness of its members is highly varying: numerous faint and some bright stars make this cluster up. Located in an environment that is rich in stars, so it's very difficult to separate from its neighborhood. It's the typical example of a cluster that an artificial intelligence wouldn't be able to recognize, but for the human eye (and brain) it is very easy to see.
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Hi-resolution image: [ reversed sketch | original sketch ]
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