NGC 1931, is an emission and reflection nebula in the constellation Auriga. The nebula has been referred to as a “miniature version of the Orion Nebula”, as it shares some of the same characteristics. It is a mixed emission-reflection nebula, and contains a smaller version of the Trapezium in its hot young star cluster centered in the emission nebula. The entire cluster/nebula complex is only about 3 arcmin[2] in size. The distance from earth is estimated at about 7000 light years. The nebula is Sharpless catalog Sh 2-237.

Telescope: Astro Physics 175EDF f8.3
Mount: Astro Physics 3600GTO “El Capitan”
Camera: SBIG STT8300
Guider: Mini Borg 50 / SBIG STi

H-alpha: 64×10 mins = 640 mins

Total Imaging Time: 10h 40m

Data Imaged remotely over 4 nights during December 2020.
Data acquisition & Processing by David Churchill.

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