Constellation - Ursa Major
Distance - 23 million light years
Messier 101 is a spiral galaxy and is the largest member of a small galaxy cluster located 23 million light years distant. It shines with the luminosity of 33 billion suns and it's size is estimated to be 190,000 light years across.
March 10-11, 2013
An LRGB composite image consisting of 2 hours of luminance data and 2 hours of color data.
Blair Valley, Anza-Borrego State Park, San Diego County, California
Optics - RC Optical Systems 10" RC at f/9
Mount - Astro-Physics 1200 GTO
Camera - SBIG ST-10XME