M22_sag2_090620-11_204x0p88s_hg2b_hpm1

Messier 22 Globular Cluster just above the teapot lid of sagittarius. About 10,000 light years away. Bright star at bottom right is 24 sagittarii.

 

204 x 0.9 second exposures.

 

Camera was a 1004x-JG modified video camera on a fixed tripod and ball head. 135mm F2.8 M42 screw thread lens stopped to F4. No filters. Camera in gamma mode 1 (highest internal DSP gamma stretching) and gain 75%.

 

Stacked and gamma stretched in Registax 5, high pass masking in Photoshop Elements.

 

Done