NGC 2903 is a fairly large barred spiral galaxy approximately 30 million light-years away in Leo. The galaxy is approximately 80,000 light-years in diameter. A large star cloud region north of the core is also cataloged as NGC 2905.
UGC 5086 is the faint, round low surface brightness galaxy to the right (west) of NGC 2903.
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
360 minutes total exposure – 6 hours
Imaged over five nights in February and March, 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/25569590504/sizes/l