Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  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

Imaging telescopes or lenses: Orion 80ED Refractor APO

Imaging cameras: ASI 1600MM Cool

Mounts: Skywatcher HEQ5 Pro

Guiding telescopes or lenses: Orion 50mm Guidescope

Guiding cameras: ZWO ASI 120 MC Color

Focal reducers: Skywatcher 0.85x Reducer & Flattener

Software: KStars Ekos/INDI  ·  Pleiades Astrophoto PixInsight 1.8 Ripely

Filters: ZWO H-alpha 7nm

Accessory: ZWO EFW 1,25" Mini Filters Wheel

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

Astrometry.net 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).


Sky plot

Sky plot


The Great Orion Nebula, 


            Angelo F. Gambino