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Contains:  NGC 2244, NGC 2024, Horsehead nebula, IC 434, NGC 1990, M 42, Great Nebula in Orion, NGC 1976, NGC 1981, Witch Head nebula, IC 2118, The star ηOri, The star ιOri, The star Cursa (βEri), The star Mintaka (δOri), The star Saiph (κOri), The star Alnitak (ζOri), The star Alnilam (εOri), The star Bellatrix (γOri), The star Betelgeuse (αOri), The star Rigel (βOri), Part of the constellation Orion (Ori), Part of the constellation Monoceros (Mon), Part of the constellation Eridanus (Eri)
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Orion Constellation in H-alpha, 


Orion Constellation in H-alpha

Orion Constellation in H-alpha

Technical card

Resolution: 2248x1468

Dates:Dec. 25, 2018

Frames: 45x60"

Integration: 0.8 hours

Avg. Moon age: 17.89 days

Avg. Moon phase: 89.38% job: 2463025

RA center: 5h 46' 33"

DEC center: +0° 55' 48"

Pixel scale: 44.853 arcsec/pixel

Orientation: 43.988 degrees

Field radius: 16.725

Locations: Home, Silver Spring, Maryland, United States

Data source: Backyard


Continuing trials with my full spectrum modified Nikon D5300 DSLR, here is an image of the Orion constellation taken through a 12nm H-alpha filter on the evening of December 25, 2018. The overall integration time was only ~45 minutes, but I was thrilled to see I captured Banard's Loop (albiet faintly) and the Rosette Nebula for the first time from my light polluted neighborhood just north of downtown DC.

Orion constellation region imaged with Nikon 35 mm Series E zoom lens at F/4, Optolong 12 nm H-alpha Filter, and full-spectrum modified Nikon D5300 mounted on a Sky Watcher Star Adventurer mini equatorial mount. Stacked using PI for a total integration time of ~45 min using 60 sec subs at ISO 400. Subtracted darks, bias, and flats. Processed in Pixinsight: Cropped, split into RGB channels with Channel extraction then worked with only the red channel going forward, gradient removal with ABE, stretched using Histogram Transformation Tool, Curves Transformation, ACDR noise reduction.



License: None (All rights reserved)

Sky plot

Sky plot


Orion Constellation in H-alpha,