The Whale (NGC 4631) a Hybrid Image by Ruben Kier

This image combined 3 1/4 hours of Luminence exposures using an ST10XME camera and AP reducer through a Meade 12" LX200R telescope, with 1 1/2 hours red and 1 hour each of green and blue exposures using an ST2000XM camera through a TEC140 refractor.

http://www.stardoctor.org/Whale2-hush.html