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“37” Open Cluster in Orion
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The open cluster 2169, often called the 37 cluster or Shopping Cart cluster, is found in the constellation Orion. It was arguably discovered by Giovanni Batista Hodierna before 1694 and was independently discovered by William Herschel in 1784. Combined exposure was 2.7 hr through an Takahashi Epsilon-180ED f/2.8 astrograph with a SBIG STC-7 camera mounted on a Paramount ME on the night 16 March 2022 in Mayhill, NM (20 x 160 sec B, 20 X160 sec G, 20 X 160 sec R, Medium Gain, sub-exposure 10 sec, MaxIm DL Stack ProTM). All images calibrated, registered, and integrated with PixInsight 1.8.8-9 Ripley (x64).
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