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NGC 7331


NGC 7331

Sketching: Date and Time: 9-12-2007, 3:20-3:50 UT Scope: 10” f/5.7 Dobsonian. 21mm and 12mm eyepieces 70x and 121x 8”x12” white sketching paper, B, 2B graphite pencils, scanned and inverted, star magnitude adjustments using Paint Seeing: Pickering 8/10 Transparency: above average 4/5 Nelm: 4.9 Frank McCabe






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