Messier 14. NGC 6402

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Messier 14  is a globular cluster located in the constellation Ophiuchus. The distance of our solar system to M14 has been determined at 30,300 light years. The total mass of M14 is about 400,000 solar masses (about 150,000 stars). The shape of the cluster is elongated, mainly due to its rotation speed and mass.

Many variable stars (around 79)  have been detected in M14. In 1938, a nova exploded in M14, but this was not discovered until, in 1964, when some astronomers were studying older plates (1932-63) taken by Helen Sawyer Hogg.


Additional Information


Name(s): Messier 14. NGC 6402

Type: Globular Cluster

RA:  17h 37m 35s

Dec: -03º 14’ 39”

Constellation: Ophiuchus

Size (arcmin): 11×11 arcmin

Magnitude: +7.6

Distance: 30,300 ly


Date: 2021-04-19 to 2021-05-18

Location:, SSO near Coonabarabran, NSW Australia

Size (arcmin): 35×30 arcmin

Telescope: 20” f/4.5 Reflector

Camera: FLI PL6303E (3072x2048pix)

Guiding: Astrodon MonsterMOAG off-axis guider

Total exposure: 6 hours (L: 1.5 h; R, G, B: 1.5 h each)

Processing: CCDStack, Photoshop CC 2021

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