NGC3718 and NGC3729


Click on the image to see a larger version.

From NASA's Astro Photo of the Day:

Careful inspection of the full field of view for this image reveals a surprising number of galaxies both near and far toward the constellation Ursa Major. The most striking is clearly NGC 3718, a warped spiral galaxy found at the lower right of the picture. NGC 3718's faint spiral arms look twisted and extended, its bright central region crossed by obscuring dust lanes. A mere 150 thousand light-years to the upper right is another large spiral galaxy, NGC 3729. The two are likely interacting gravitationally, accounting for the peculiar appearance of NGC 3718. While this galaxy pair lies about 52 million light-years away, the remarkable Hickson Group 56 can also be seen clustered just left of NGC 3718. Hickson Group 56 consists of five interacting galaxies and lies over 400 million light-years away.

Scope: AP155EDF Triplet Refractor w 4" Field Flattener and Robofocus 
Camera: Apogee U16M w Astrodon 5nm H-Alpha and OIII Filters
Mount: Paramount ME guided with Borg 60 and ST-402ME 
38 x 10 min Luminance
6 x 5 min RGB

Acquired in CCDSoft5
Dark and Flat calibration, Alignment and Sigma Reject combine in Maxim
Curves, Contrast Adjustment, Levels in PS CS4

Flesherton, Ontario
May 2012