Messier 72. NGC 6981

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Messier 72 is a loosely concentrated globular cluster located in the constellation Aquarius. Its distance, 54,570 ly, nearly twice the distance to the galactic center, makes it one of the most distant clusters in the Messier Catalog. Its visual bright magnitude despite the great distance, means that its intrinsic brightness is very high. Its combined mass is 168,000 solar masses and it is believed to be 9.5 billion years old.


Additional Information


Name(s): Messier 72. M72. NGC 6981

Type: Globular Cluster

RA:  20h 53m 28s

Dec: -12º 32’ 14”

Constellation: Aquarius

Size (arcmin): 6×6 arcmin

Magnitude: +9.4

Distance: 54,570 ly


Date: 2019-09-26 to 2020-10-08

Location:, SSO near Coonabarabran, NSW Australia

Size (arcmin): 36×36 arcmin

Telescope: 20” f/6.8 Reflector

Camera: SBIG STX16803 (4096x4096pix)

Guiding: Astrodon MonsterMOAG off-axis guider

Total exposure: 7 hours (L: 2h 10m; RGB: 4h 50m)

Processing: CCDStack, Photoshop CC 2020

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