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Contains:  Great Nebula in Orion, M 42, M 43, NGC 1973, NGC 1975, NGC 1976, NGC 1977, NGC 1980, NGC 1981, NGC 1982, The star 42Ori, The star 45Ori, The star θ1Ori, The star θ2Ori, The star ιOri


            Jean-Marie Locci
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Technical card

Imaging telescopes or lenses: Boren-Simon PowerNewt 8

Imaging cameras: QSI 583 wsg

Mounts: Sky-Watcher NEQ6

Guiding telescopes or lenses: Boren-Simon PowerNewt 8

Guiding cameras: Lodestar

Focal reducers: Borel-Simon Coma Corrector

Software: Cartes du Ciel  ·  PixInsight  ·  photoshop  ·  EasyHDR

Filters: Astrodon RGB filter set  ·  Astrodon H-alpha 5nm

Accessory: Sky-Watcher SW Electric Focuser

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

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

Basic astrometry details job: 156180

RA center: 5h 35' 2"

DEC center: -5° 14' 56"

Pixel scale: 1.830 arcsec/pixel

Orientation: -89.518 degrees

Field radius: 1.059 degrees

Resolution: 3352x2532

Locations: Home, Perth, Australia

Data source: Backyard


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.



Jean-Marie Locci
License: None (All rights reserved)

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            Jean-Marie Locci