Location of Photo:
Glacier Point, Yosemite National Park, CA.
Date/Time of photo:
9/20/15 1:00 am
Celestron CPC EdgeHD 11, Hyperstar, modified Canon DSLR T3i
It was an incredibly clear dark night at Glacier Point in Yosemite NP where took 40 minutes of data to capture my best shot of M31