Messier 21 - Open Cluster in Sagittarius
Description: Open Cluster in Sagittarius, also known as NGC6531 and Cr363. Magnitude 5.9, 13 arc minutes across containing about 70 stars. Film: Kodak Gold 400, chilled with dry-ice Filter: none Scope: 8" f6 Newtonian Exposure: 30 Minutes Location: Coral Pink Sand Dunes, Utah Date: 21 May 1990

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