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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, 





    
        

            Jean-Marie Locci
M42

M42

Technical card

Resolution: 3326x2503

Dates:Dec. 27, 2013Dec. 28, 2013Jan. 2, 2014Jan. 3, 2014

Frames:
Astrodon H-alpha 5nm: 8x15" -15C bin 1x1
Astrodon H-alpha 5nm: 8x180" -15C bin 1x1
Astrodon H-alpha 5nm: 8x30" -15C bin 1x1
Astrodon RGB filter set: 24x180" -15C bin 1x1
Astrodon RGB filter set: 24x20" -15C bin 1x1
Astrodon RGB filter set: 24x5" -15C bin 1x1
Astrodon RGB filter set: 24x60" -15C bin 1x1

Integration: 2.3 hours

Darks: ~10

Flats: ~10

Bias: ~10

Avg. Moon age: 13.17 days

Avg. Moon phase: 14.78%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 156180

RA center: 83.761 degrees

DEC center: -5.249 degrees

Pixel scale: 1.830 arcsec/pixel

Orientation: -89.518 degrees

Field radius: 1.059 degrees

Locations: Home, Perth, Australia

Data source: Backyard

Description

This is the result of a HDR composition mixing 5, 20, 60 and 180sec in RGB and 15, 30 and 180sec in Ha. The software used to compose the final HDR image is EasyHDR.

Comments

Author

jmlocci
Jean-Marie Locci
License: None (All rights reserved)
3120
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M42, 





    
        

            Jean-Marie Locci