Herschel 257
NGC 4548
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Object Type
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Galaxy SBb
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Constellation
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Coma Berenices
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Magnitude
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10.1
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Size
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5.2' x 4.2'
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Combination of 5, 3 minute images unfiltered.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.
Visual Observation Notes:- NGC 4548.
M91! Centre elongated and bright. Faint outer haze. Moderately large.
18" f/5 newtonian. 16mm nagler eyepiece. 143x.
Sky View observatory. Zenith limiting magnitude 6.7.