Hemisphere:  Southern  ·  Contains:  Great Orion Nebula  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1976  ·  NGC 1980  ·  NGC 1982  ·  Orion Nebula  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri
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M42 in Narrowband, 


            Michael Caligiuri
M42 in Narrowband
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M42 in Narrowband

Technical card

Imaging cameras: QSI683wsg8

Guiding telescopes or lenses: Takahashi FSQ106N

Filters: Ha (3nm) SII (3nm) OIII (3nm) Astronomik

Dates:Dec. 4, 2020

Frames: 36x600"

Integration: 6.0 hours

Avg. Moon age: 18.61 days

Avg. Moon phase: 84.21%

Basic astrometry details

Astrometry.net job: 4067891

RA center: 5h 34' 55"

DEC center: -5° 29' 42"

Pixel scale: 2.111 arcsec/pixel

Orientation: 359.302 degrees

Field radius: 0.924 degrees

Resolution: 2443x1994

Data source: Backyard


This is an image from my backyard observatory in the suburbs of Carlsbad, CA. First light for a new camera added to the fleet: A QSI 683-wsg8. Imaged through narrowband filters under a bright moon. 2.5 hrs of Ha, 1.5 hrs of OIII and 1.5 hrs of SII in 10 minute subs. Color mapped using the Hubble palette with Ha = green; SII = red, and OIII = blue.



Michael Caligiuri
License: None (All rights reserved)

Sky plot

Sky plot


M42 in Narrowband, 


            Michael Caligiuri