Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  M 42  ·  M 43  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1982  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri
M42 in monochrome, Henry Kwok
M42 in monochrome
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M42 in monochrome

M42 in monochrome, Henry Kwok
M42 in monochrome
Powered byPixInsight

M42 in monochrome

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Description

I acquired this image as part of my test for my recently acquired WO GT81 and secondhand Atik 314L+, mounted on my ZEQ25. I took only three subs at 10 seconds, 5 minutes and 10 minutes with no filter while ironing out the mount. I did a quick HDR combine and performed very limited editing since I had the subs anyway to see what I could get. I do not have commercial software to do HDR combine, so I used manual methods with GIMP 2.9. Unfortunately, I cannot find any reference on how to do noise reduction in GIMP 2.9, and I can no longer get the file back into Pixinsight LE for noise reduction - so this is one noisy picture. If you have any tips on how to denoise in GIMP 2.9, please let me know. Overall I am quite happy with the setup. Still need to tweak reducer spacing and mount balance.

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M42 in monochrome, Henry Kwok