Globular Cluster M107 (also known as Messier Object 107 or NGC 6171) is a very loose globular cluster in the constellation Ophiuchus. It was discovered by Pierre Méchain in April 1782 and independently by William Herschel in 1793. M107 is close to the galactic plane at a distance of about 20,900 light-years from Earth. There are 25 known variable stars in this cluster.

About this Photo:
Date(s): June 3, 2011
Location: From my driveway in Georgetown, Texas
Telescope: Celestron C9.25 @ F6.5
Mount: CGEM
Guiding: Orion StarShoot AutoGuider / Taurus Tracker III OAG
Camera: Canon 40D Modified
Filter: None
Exposure: 12 x 120s + 14 x 60s @ ISO1600 (38 Min total)
Acquisition: ImagesPlus 3.75 Camera Control
Processing: ImagesPlus 3.75 – Darks,Flats,Bias
Post-processing: Adobe Photoshop CS3; Gradient Exterminator; Noise Ninja; Noel Carboni's Tools; Annie’s Astro Actions
Temperature(s): 80º F