M63 (NGC 5055, UGC 8334, the Sunflower Galaxy and others) is a spiral galaxy located approximately 37 million light-years away in Canes Venatici. It is a member of the M51 Group of galaxies.
Luminance – 24x600s – 180 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
360 minutes total exposure – 6 hours
Imaged February 28th and March 1st, 9th and 12th, 2016 from Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.
LRGB - https://www.flickr.com/photos/dcrowson/25642779862/sizes/l
See my recent refractor image here - https://www.flickr.com/photos/dcrowson/24826172549/sizes/l.