M 22 + M 28

50% resolution (750kB)

Object identification (750kB)

Image with NP101 (f=540mm)

Object data of M22

Object type: globular cluster (VII)
Size: 32'
Magnitude: 5.1 mag
Constellation: Sgr
Distance: 10,400 Ly
Notes: 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 widefield image shows M22 on the left side and M28 (another globular cluster) on the right side.

Exposure data

Date: 2009-09-10
Location: La Palma / Spain (1700m)
Telescope: Rubinar300 (2.5" Maksutov Cassegrain f=300mm)
Camera: EOS1000D (ISO400)
Mount: Astrotrac TT320X
Exposure time: 25x2m
Exposure time total: 50m