The Great Hercules Cluster

Designation:
M13
Date:
September 28th, 2017
Camera:
Canon EOS 7D Mark II ( unmodified )
Optics:
Sky-Watcher ED120mm Doublet
Focal Length:
900 mm
Exposure:
19 x 300 sec
ISO:
500
Mount:
Sky-Watcher NEQ6 Pro
Guiding:
Orion Star Shoot Auto Guider
Software:
Adobe Photoshop, DSS, Astroflat
Notes:
M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars. The small galaxy in upper right is the 12th magnitude NGC 6207. Great view in telescope.