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Contains:  41 the01 Ori, 42 c Ori, 43 the02 Ori, 44 iot Ori, 45 Ori, De Mairan's nebula, Great Nebula in Orion, Hatysa, M 42, M 43, M43, NGC 1973, NGC 1975, NGC 1976, NGC 1977, NGC 1980, NGC 1982, NGC1973, NGC1975, NGC1977, NGC1980, NGC1981, Sh2-279, Sh2-281, The star 42Ori, The star 45Ori, The star θ1Ori, The star θ2Ori, The star ιOri
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M42 with the Running Man - OSC camera, 


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M42 with the Running Man - OSC camera

Technical card

Dates:Jan. 19, 2020Jan. 29, 2020

Astronomik H Alpha 12 nm 1.25": 22x180" (gain: 121.00) -20C bin 1x1
Optolong L-Pro 1.25": 60x180" (gain: 121.00) -20C bin 1x1
Optolong L-Pro 1.25": 45x30" (gain: 121.00) -20C bin 1x1
Optolong L-Pro 1.25": 135x60" (gain: 121.00) -20C bin 1x1

Integration: 6.7 hours

Darks: ~60

Flats: ~60

Flat darks: ~60

Bias: ~100

Avg. Moon age: 14.19 days

Avg. Moon phase: 23.82%

Bortle Dark-Sky Scale: 7.00

Mean FWHM: 2.30 job: 3252111

RA center: 5h 35' 5"

DEC center: -5° 26' 2"

Pixel scale: 1.945 arcsec/pixel

Orientation: -60.002 degrees

Field radius: 1.054 degrees

Resolution: 3249x2163

Locations: SkyShed roll-off, Upper Providence, PA, United States

Data source: Backyard


M42 as captured with ZWO ASI294MC Pro over several separate dates in January 2020. PinInsight PixelMath in combination with numerous sized Range Masks was used to combine 30, 60 and 180s L-Pro filter data to distinguish nebula details while trying to minimize core brightness. Then 180s Ha data was added in the Red channel to bring forth more nebula structure.



License: None (All rights reserved)

Sky plot

Sky plot


M42 with the Running Man - OSC camera, 



In these public groups

Broadband under Bortle 7/8/9