Messier 18 - Open Cluster in Sagittarius
Description: Open cluster M18 in Sagittarius. It is the loose cluster of about 20 stars, located below nebula M17. Compact at about 9 arc minutes in diameter, combined brightness is magnitude 6.9. Film: Hypered Kodak Tech-Pan 2415 Scope: 6" f4.5 Newtonian masked to 5" f5.5 Exposure: 30 Minutes Location: near Carseland, Alberta Date: 24 May, 1992

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