NGC3184 Galaxy in Ursa Major
(RA 10h 18.3m , Dec. +41° 25', 9.8 mag., 7.8 x 7.2 arcmin.)
This large face-on spiral galaxy would be a real showcase if not for its very low surface brightness. It is easy to find just 45' W of m Ursae Majoris (see finder chart below).
The above image was taken on February 21 and March 15, 2001 from Harrowsmith, Ontario. Cookbook 245 LDC camera was used on Celestron Ultima 8 SCT with f6.3 focal reducer. Telescope was autoguided with Cookbook 211 LDC camera on a piggybacked 500mm f8 telephoto lens. Five white exposures (240 sec. each) were combined with cyan, magenta and yellow-filtered images (4 x 240 sec. each) using AIP4WIN. Color image was then adjusted in Lab color space with Corel PhotoPaint 8.
North is to the right.
Map created in Guide 7.0 - 7°45' x 7°45'. North is up.
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© Jan Wisniewski