Imaging telescopes or lenses: William Optics Redcat 51
Imaging cameras: Nikon D5500
Mounts: Sky-Watcher EQM 35 Pro
Guiding telescopes or lenses: ZWO 30mm f/4 Mini Guide Scope
Guiding cameras: ZWO ASI 120 Mini Mono
Software: PixInsight
Accessory: ZWO ASiair pro · ZWO EAF
Dates:Dec. 16, 2020 , Dec. 20, 2020 , Dec. 26, 2020
Frames: 91x300" (7h 35') ISO200
Integration: 7h 35'
Flats: ~60
Bias: ~60
Avg. Moon age: 6.47 days
Avg. Moon phase: 42.57%
Bortle Dark-Sky Scale: 4.00
Astrometry.net job: 4136512
RA center: 5h 40' 47"
DEC center: -2° 10' 0"
Pixel scale: 3.274 arcsec/pixel
Orientation: -91.637 degrees
Field radius: 1.371 degrees
Resolution: 2611x1506
Locations: Backyard, Belen, NM, United States
Data source: Backyard
NGC 2023 is an emission and reflection nebula in the equatorial constellation of Orion. It was discovered by the German-born astronomer William Herschel on 6 January 1785. This reflection nebula is one of the largest in the sky, with a size of 10 × 10 arcminutes. It is located at a distance of 1,300 ly (400 pc) from the Sun, and is positioned ~15′ to the northeast of the Horsehead Nebula.
This star-forming nebula forms part of the Orion B molecular cloud, or Lynds 1630, and is located in the northern section of this complex. In terms of stellar density, it is the poorest of the four clusters embedded in the cloud complex, with only 21 embedded infrared sources. The reflection nebula is illuminated by the Herbig Ae/Be star HD 37903, which has a spectral class of about B2 Ve. The region around the central star is radiating fluorescent molecular hydrogen emission at a near-infrared range. Infrared emission of polycyclic aromatic hydrocarbons has been detected from the nebula's dust.
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