Hickson 81

Dan Crowson

Hickson 81 consists of PGC 57777, 2MASX J16181406+1247202, 2MASS J16181481+1247361 and 2MASX J16181367+1248108. These appear to be collectively cataloged as UGC 10319, too. These are located at an unknown distance in Hercules.


Luminance – 24x600s – 240 minutes – binned 1x1

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


360 minutes total exposure – 6 hours


Imaged June 10th, 17th and 18th, 2020 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.


LRGB - https://www.flickr.com/photos/dcrowson/50130294998/sizes/l/


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


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