Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  48 sig Ori  ·  50 zet Ori  ·  Alnitak  ·  B33  ·  Flame Nebula  ·  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  IC431  ·  IC432  ·  IC434  ·  IC435  ·  NGC 2023  ·  NGC 2024  ·  NGC2023  ·  NGC2024  ·  Orion  ·  Orion B  ·  Sh2-277  ·  The star Alnitak (ζOri)  ·  The star σOri  ·  VdB51
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NGC 2023, 


            Joey Troy
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NGC 2023

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, 2020Dec. 20, 2020Dec. 26, 2020

Frames: 91x300" ISO200

Integration: 7.6 hours

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.


Sky plot

Sky plot


NGC 2023, 


            Joey Troy