Herschel 177
NGC 3640
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Object Type
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Galaxy E2?
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Constellation
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Leo
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Magnitude
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10.3
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Size
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4.0' x 3.2'
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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 3640.
Fairly bright. Moderately large and round. Bright centre, fading smoothly outwards. NGC 3641 visible ajoining to the south. Very small and fainter. Almost star-like.
18" f/5 newtonian. 16mm nagler eyepiece. 143x.
Sky View observatory. Zenith limiting magnitude 6.7.