Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  41 the01 Ori  ·  43 the02 Ori  ·  44 iot Ori  ·  De Mairan's nebula  ·  Great Orion Nebula  ·  HR1886  ·  HR1887  ·  HR1906  ·  HR1911  ·  HR1918  ·  Hatysa  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1976  ·  NGC 1980  ·  NGC 1982  ·  NGC 1999  ·  Orion Nebula  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri
The Orion Nebula – M42 My Data and my mistake, Van H. McComas
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The Orion Nebula – M42 My Data and my mistake

The Orion Nebula – M42 My Data and my mistake, Van H. McComas
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The Orion Nebula – M42 My Data and my mistake

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The Orion Nebula – M42 My Data and my mistake

I had another cold night with seeing Average 3/5 but with some thin ice clouds moving through (deleted 9 images). You can see my mistake in positioning. With the SkyGuider Pro polar alignment is done manually with Sharp Cap and aiming the camera is also manually. Note to self: “Always recheck the position AFTER you let go of the camera!” The camera probably only dipped 1 mm but it was enough to cut off the top part of the nebula. I guess I will have to give this target another go this season. I did shoot several images at 20 seconds but had to drop a few but the rest was shot at 1 minute exposure, modified Canon T7i, Sigma 150-600 mm telephoto lens shot at 600 mm, ended up with 26 Lights, plus Darks, Flats, and Dark Flats. Processed in Deep Sky Stacker, Star Tools 1.6 and finished up in Photoshop 2021.

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The Orion Nebula – M42 My Data and my mistake, Van H. McComas

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