M102 - Spiral Galaxy in Ursa Major.
Often considered a nonexistent object, it has been postulated that
this is actually a duplicate sighting of M101.
Astronomer Owen Gingerich proposed that NGC5866 be substituted instead,
which is the convention that I have used on this web site.
The image is a stack of 9 one minute exposures using a 5" f/6 refractor.
Image processing performed using AIP4WIN.
This image has been cropped from its original size of 1300x1030.