M42 The Orion Nebula (Caelan Chapman)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 Ori A) · 41 Ori C · 41 Ori D · 41 the01 Ori · 42 Ori) · 42 c Ori · 43 Ori) · 43 the02 Ori · 44 Ori) · 44 iot Ori · 45 Ori · De Mairan's nebula · Great Orion Nebula · Hatysa · LBN 974 · LDN 1640 · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · Orion Nebula · Sh2-279 · Sh2-281 · The star 45 Ori · And 7 more.

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M42 The Orion Nebula

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M42 The Orion Nebula

The Orion Nebula and the Running Man shot in RGB. I opted to skip L and I do not regret it for this shot.

This was shot at Cherry Springs in the astronomy field on the nights of Nov 5th and Nov 6th 2021. There are approximately 120-200 minutes per channel depending where the scheduler ended for the night. Each channel had sets of 400s, 30s, and 5s exposures to make a full HDR image.

Unfortunately, my backfocus is off by a bit so the stars around the corners aren't quite round. Eventually I'm going to replace the stock field flattener/reducer as I suspect that is the problem. There is no reason I should have an uneven field on a widefield refractor with such a tiny sensor.

Original
B
Final
C

IOptron CEM

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Status	Advanced success
Started	...
Astrometry.net job	5717355
PixInsight job	KZE4WIEX7L5WC41XIT5ED9CHR727HU3O
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m16s.47
RA (top/left)	05h35m34s.75
RA (top/right)	05h31m24s.86
RA (bottom/right)	05h34m58s.47
RA (bottom/left)	05h39m08s.15

Dec (center)	-05°23′05″.1
Dec (top/left)	-04°22′32″.7
Dec (top/right)	-05°42′02″.0
Dec (bottom/right)	-06°23′38″.9
Dec (bottom/left)	-05°04′01″.3

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M42 The Orion Nebula

M42 The Orion Nebula

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M42 The Orion Nebula

M42 The Orion Nebula

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