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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
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The Great Orion Nebula, 


            Angelo F. Gambino
The Great Orion Nebula
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The Great Orion Nebula

Technical card

Dates:Jan. 8, 2020

ZWO H-alpha 7nm: 80x3" (gain: 300.00) -20C bin 3x3
ZWO H-alpha 7nm: 12x300" (gain: 300.00) -20C bin 3x3
ZWO H-alpha 7nm: 30x60" (gain: 300.00) -20C bin 3x3

Integration: 1.6 hours

Darks: ~40

Flats: ~100

Flat darks: ~100

Bias: ~200

Avg. Moon age: 12.35 days

Avg. Moon phase: 93.53%

Bortle Dark-Sky Scale: 9.00

Basic astrometry details job: 3205223

RA center: 5h 35' 8"

DEC center: -5° 20' 45"

Pixel scale: 2.252 arcsec/pixel

Orientation: 8.762 degrees

Field radius: 1.182 degrees

Resolution: 2274x3019

Data source: Backyard


The Great Orion Nebula taken in the Hydrogen-Alpha narrow line (7nm) from the light polluted city centre of Palermo (Sicily, Italy).



Angelo F. Gambino
License: None (All rights reserved)

Sky plot

Sky plot


The Great Orion Nebula, 


            Angelo F. Gambino