Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Orion Nebula  ·  IC 420  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  Orion Nebula  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri  ·  Upper Sword  ·  the Running Man Nebula
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The Orion Nebula, 


The Orion Nebula
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The Orion Nebula

Technical card

Imaging telescopes or lenses: StellarVue SVX080T

Imaging cameras: ZWO ASI1600MM-P (Pro Cooled Mono)

Mounts: Ioptron CEM60

Guiding telescopes or lenses: Stellarvue F050G

Guiding cameras: ZWO ASI178MM

Focal reducers: Stellarvue 0.74 Reducer

Software: Pixinsight  ·  Sequence Generator Pro

Filters: Astrodon 31mm 3nm OIII  ·  Astrodon 31mm 3nm HA

Accessory: Optec FocusLynx

Dates:Feb. 9, 2021

Astrodon 31mm 3nm HA: 79x180" (gain: 139.00)
Astrodon 31mm 3nm HA: 50x30" (gain: 139.00)
Astrodon 31mm 3nm OIII: 69x180" (gain: 139.00)
Astrodon 31mm 3nm OIII: 50x30" (gain: 139.00)

Integration: 8.2 hours

Avg. Moon age: 27.20 days

Avg. Moon phase: 6.02%

Basic astrometry details

Astrometry.net job: 4225282

RA center: 5h 35' 22"

DEC center: -5° 32' 45"

Pixel scale: 1.718 arcsec/pixel

Orientation: 279.245 degrees

Field radius: 1.779 degrees

Resolution: 5953x4485

Data source: Backyard


The Great Orion Nebula. Shot through HA and O3 narrowband filters from my yard in suburban Atlanta. I was going for something a little different here, sort of a blend of monochrome and color. I like the way the surrounding nebulosity looks in monochrome but I also like the color of M42.


Sky plot

Sky plot


The Orion Nebula,