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Location of Photo:

Front porch of my home in central Boulder, Colorado

Date/Time of photo:

Dec 4, 2021 at 4:30 am MST


Hardware: Canon EOS Rebel Ti3, 135 mm Rokinon lens, Ioptron SkyTracker pro. Software: Nebulosity4, Siril and GIMP


This is comet C/2020 A1 Leonard imaged early morning on December 4, 2021. Globular cluster Messier 3 is at the top of the picture. There is also another (barely visible) globular cluster at the bottom middle of the image (NGC 5466). 9 120-second exposures at ISO 1600 and f 2.8