M 22

Full resolution (1600x1200 px  970kB)

150% resolution (1.7MB)

Object data of M22

Object type: globular cluster (VII)
Size: 32'
Magnitude: 5.1 mag
Constellation: Sgr
Distance: 10,400 Ly

Messier 22 is one of the brightest globular clusters in the sky. At 10,400 light years, it is one of the nearer globular clusters.

The above images with higher resolution show a faint short line south east of M22. This is the minor planet Maria (170), which passed M22 September 10, 2009.

Exposure data

Date: 2009-09-09 + 10
Location: La Palma / Spain (1700m)
Telescope: TeleVue NP101 (4" Apo f=540mm)
Camera: ST2000XM with CFW8 and Baader Filters
Binning: L 1x1 / RGB 1x1
Exposure time: L 32x2m / R 5x5m / G 5x5m / B 5x5m
Exposure time total: 2h 19m
Notes: Drizzle for 150% size