M107 - Globular Cluster in Ophiuchus

M 107 (NGC 6171) is a globular cluster located in the contellation Ophiuchus. It was discovered by Pierre Mechain in 1782. William Herschel independently observed this cluster in 1793. Charles Messier later added this object to his catalogue. It is the last globular cluster to appear in his catalogue.

M 107 lies approximately 21,000 light years away and has a diameter of 80 light years. It contains 100,000 stars, many of them being variable stars.

Globular clusters reside in the halo around most galaxies. They contain some of the oldest known stars.

Telescope: TS-10 f/5 Newtonian
Camera: Modified Canon 650D; ISO 1600
Mount:  iOptron CEM60
Guiding: QHY5 L II-M on 60 mm guide scope
Exposures: 9 @ 5min.
Processing:  Images were focused using the camera's live view. Subframes were aligned and combined in ImagesPlus. The composite image was adjusted in Photoshop. Topaz Detail and DeNoise were applied.
Note: Taken from my backyard observatory in southeastern Minnesota on 6/24/19.
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