Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  41 the01 Ori  ·  42 c Ori  ·  43 the02 Ori  ·  44 iot Ori  ·  45 Ori  ·  De Mairan's nebula  ·  Great Orion Nebula  ·  Hatysa  ·  IC 420  ·  Lower Sword  ·  M 42  ·  M 43  ·  M43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  NGC1973  ·  NGC1975  ·  NGC1977  ·  NGC1980  ·  NGC1981  ·  Orion Nebula  ·  Sh2-279  ·  Sh2-281  ·  The star 42Ori  ·  And 8 more.
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It was about time for a new M42 picture, 


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It was about time for a new M42 picture

Technical card

Imaging telescopes or lenses: Celestron RASA 11"

Guiding telescopes or lenses: TS-Optics Guidescope 328/80

Software: Stark Labs PHD2  ·  PixInsight PixInshight Core 1.8 Ripley  ·  Sequence Generator Pro Seqence Generator Pro

Dates:Dec. 17, 2020

Frames: 400x90"

Integration: 10.0 hours

Avg. Moon age: 3.06 days

Avg. Moon phase: 10.23%

Astrometry.net job: 4217797

RA center: 5h 34' 56"

DEC center: -5° 12' 47"

Pixel scale: 1.253 arcsec/pixel

Orientation: -32.445 degrees

Field radius: 1.754 degrees

Resolution: 6483x7718

Data source: Backyard


Thanks to my friend Ed Defesche who did a marvelous job on repairing the crappy background gradient on this image.

I figures I had not done an M42 image since just after I got my scope two years ago so it was about time to do a new version.

Note that I used a single sub length for the full dynamic range of this picture. I binned 2x2 to increase the full well of the 6200mm and it is amazing what this camera can do.

The frame is produced by the "annotation frame" PixInSight script, see my other pictures for a link to the script download.



  • Final
    It was about time for a new M42 picture, 


  • It was about time for a new M42 picture, 




Description: Version without frame

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Sky plot

Sky plot


It was about time for a new M42 picture,