Messier 107. NGC 6171

Click on the image for a full resolution version


Messier 107 was discovered by Pierre Mechain in 1782, but it was not added to the Messier Catalog until 1947. This 13 arcmin wide cluster contains about 100,000 stars, having a mass of about 180,000 solar masses.

Additional Information


Name(s): Messier 107. M107. NGC 6171

Type: Globular Cluster

RA:  16h 32m 31s

Dec: -13º 03’ 06”

Constellation: Ophiuchus

Size (arcmin): 13×13 arcmin

Magnitude: 7.9

Distance: 21,000 ly


Date: 2019-05-31 to 2019-06-05

Location:, SSO near Coonabarabran, NSW Australia

Size (arcmin): 35×32 arcmin

Telescope: 20” f/6.8 Reflector

Camera: SBIG STX16803 (4096x4096pix)

Guiding: Astrodon MonsterMOAG off-axis guider

Total exposure: 6h 10m (L: 2h; RGB: 4h 10m)

Processing: CCDStack, Photoshop CC 2020

error: Content is protected !!