M22 + NGC 6642

Dan Crowson
 

M22 (NGC 6656 and others) is a Shapley-Sawyer class VII (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 10,600 light-years away in Sagittarius.

 

NGC 6642 (ESO 552-32 and others) is a small globular at the top right. It appears to be located approximately 26,400 light-years away.

 

Luminance – 12x600s – 120 minutes – binned 1x1

RGB – 8x300s – 40 minutes each – binned 2x2

 

240 minutes total exposure – 4 hours

 

Imaged on September 28th and 29th, 2019 Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

 

LRGB - https://www.flickr.com/photos/dcrowson/49275691391/sizes/l/


Dan

----          
Dan Crowson                          dcrowson@...
Dardenne Prairie MO               http://www.crowson.com

 

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