Observation by Alan Thomas: M22 Globular Cluster in Sagittarius.

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Alan Thomas


Alan Thomas


2022 Jul 31 - 01:18


2022 Jul 31 - 13:07


The Sagittarius Cluster (M22)

  • 42cm CDK17 corrected Dall-Kirkham f/6.8
  • FLI ProLine KAF-09000 camera
  • 10Micron GM4000 mount



Observatorio del Teide, Tenerife

Target name

M22 Globular Cluster in Sagittarius.


M22 Globular Cluster in Sagittarius.

About this image

This magnificent globular cluster was discovered by Abraham Ihle, a German amateur astronomer, in August 1665 while observing Saturn. Sitting close to the Milky Way's central bulge, it is one of the nearest globular clusters to us, and probably the first to be discovered. It seems to be the globular cluster that has everything - visually stunning, large (about half a degree in diameter), containing multiple black holes and planetary nebulae, and well placed as a gravitational lens. This image, obtained using the COAST (COmpletely Autonomous Survey Telescope) instrument in Tenerife, shows it in all its glory.

Diameter c.99ly. Distance c.10,600ly. Age c.12billion yrs.

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