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Contains:  M 43, NGC 1982, NGC 1977, NGC 1980, M 42, Great Nebula in Orion, NGC 1976, NGC 1975, NGC 1973, The star 45Ori, The star ιOri, The star θ2Ori, The star θ1Ori, The star 42Ori
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M-42 (Orion Nebula), 


            Randal Healey
M-42 (Orion Nebula)

M-42 (Orion Nebula)

Technical card

Resolution: 3232x2431

Dates:Dec. 12, 2017

Astrodon Ha 5nm, OIII 3nm, SII 3nm: 42x300" -30C bin 1x1
Astrodon LRGB Gen2 E-Series Tru-Balance Filters: 60x180" -30C bin 1x1

Integration: 6.5 hours

Darks: ~75

Flats: ~50

Bias: ~150

Avg. Moon age: 24.26 days

Avg. Moon phase: 28.29% job: 1865416

RA center: 83.840 degrees

DEC center: -5.207 degrees

Pixel scale: 2.323 arcsec/pixel

Orientation: 189.508 degrees

Field radius: 1.305 degrees

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Backyard


The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2,000 times that of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula. The Orion Nebula is one of the most scrutinized and photographed objects in the night sky, and is among the most intensely studied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula.



Randal Healey
License: None (All rights reserved)

Sky plot

Sky plot


M-42 (Orion Nebula), 


            Randal Healey