Messier 37 - Open Cluster in Auriga

on Tuesday, January 7, 2020
Messier 37 is a large open cluster found in the constellation of Auriga. It has an apparent magnitude of 6.2 and covers about 24 arc-minutes of sky, the distance from Earth is about 4,500 light-years. Did you know M37 has at least a dozen red giant stars included in the cluster?

Tech Specs: Sky-Watcher Esprit 120mm ED Triplet APO Refractor, Celestron CGEM-DX mount (pier mounted), ZWO ASI071MC-Pro running at -25C, 20 x 60 second exposures, GAIN 200, guided using a ZWO ASI290MC and Orion 60mm guide scope. Captured using SharpCap v3.2. Image date: December 20, 2019. Location: The Dark Side Observatory, Weatherly, PA, USA.
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