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Contains:  M 43, NGC 1982, NGC 1977, NGC 1980, M 42, Great Nebula in Orion, NGC 1976, NGC 1975, NGC 1981, NGC 1973, The star 45Ori, The star ιOri, The star θ2Ori, The star θ1Ori, The star 42Ori
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M42 in H@, HDR composition [ASI1600MM-C], 


M42 in H@, HDR composition [ASI1600MM-C]

M42 in H@, HDR composition [ASI1600MM-C]

Technical card

Resolution: 2866x1790

Dates:Sept. 22, 2017

ZWO H-alpha 7nm: 12x180" (gain: 200.00) -15C bin 1x1
ZWO H-alpha 7nm: 25x5" (gain: 200.00) -15C bin 1x1
ZWO H-alpha 7nm: 40x60" (gain: 200.00) -15C bin 1x1

Integration: 1.3 hours

Darks: ~31

Flats: ~15

Bias: ~100

Avg. Moon age: 2.26 days

Avg. Moon phase: 5.67% job: 1742935

RA center: 83.705 degrees

DEC center: -5.350 degrees

Pixel scale: 2.966 arcsec/pixel

Orientation: 90.309 degrees

Field radius: 1.392 degrees

Locations: Chez moi, Chaponnay, Rhône, France

Data source: Backyard


Gain 200, offset 60, -15°C
25 x 5" + 40 x 60" + 12 x 180"
Next step with CLS-RGB filters...



License: Attribution-NonCommercial Creative Commons

Sky plot

Sky plot


M42 in H@, HDR composition [ASI1600MM-C],