M81 in Ursa Major

Photo Details:

• Instrument: Orion Mak-Newtonian (1000mm-f/5.25)
• Filters: Astrodon
• Exposure: Luminance 20 x 10 mins
• Camera: SBIG STF-8300
• Software: Images Plus, Registar, Photoshop CS5, Noise Ninja, Maxim DL
• Location: Mountain Ranch, California, El. 2500ft (120d 30' 18" W & 38d 13' 53" N)
• Date: February 16, 2013
• Comments: Most of the subs for this image were take on the 2 days around the 1st quarter moon