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NGC 7664 (Galaxy)
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Right ascension: 23h 28m
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Declination: 25° 11'
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Constellation: Pegasus
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Date/time: 2017.10.19 21:30 UT
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Equipment: 12" f/5 Newtonian
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FoV: 15'
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Magnification and filter(s): 250x
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Seeing: 6/10
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Transparency: 3/5
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SQM: 21.43 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: 3 - definite details, interesting look
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Difficulty: 4 - hardly visible, dark adaptation and very dark skies needed, averted vision is required to see 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:
Very tiny and very faint elliptic galaxy. At 71x it is already visible as a fuzzy little spot, but it is necessary to increase the magnification for better looks. Interesting, but with my 6mm TMB Planetary II eyepiece it disappears whereas with my 6mm Synta GoldLine eyepiece it appears nicely, which is weird as usually the Planetary EP gives a much better view, but now the GoldLine wins easily. This is a fine example why one needs more eyepieces of the same focal length.
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Hi-resolution image: [ reversed sketch | original sketch ]
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ikonra kattintva magyarul is olvashatod az észlelést.
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