NGC 2099 (Messier 37), An open cluster in constellation Auriga. FOV is approximately 54' x 36'. This is eleven 300 second guided subs taken from my backyard on December 13th, 2021. A Canon EOS7D at iso 3200; iOptron CEM40G mount with a Celestron 127mm Mak-Cas f/12, FL 1500mm.
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