By Gail Tankersley on May 25, 2012   /     /   0 Comments

M51 (Whirlpool Galaxy) and its companion NGC5195 galaxy are located 23 million light years away in the constellation Canes Venatici.  The red/pink areas of the galaxy are star forming HII regions.

Optics:  Deep Sky Instruments RC10C
Mount:  Astro-Physics AP900GTO
Camera:   SBIG ST2K XM
Guiding Camera:  SBIG ST-i
Filters Astrodon  S2, Ha & O3
Location:  Deerlick Astronomy Village & Roswell Georgia

Exposure Details
Ha = 435 Minutes (mapped to red)
L = 310 Minutes
RGB = 200 Minutes Bin 2x2
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