Messier 42 core 2022 (Barry Wilson)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 the01 Ori · 43 the02 Ori · De Mairan's nebula · Great Orion Nebula · LBN 974 · M 42 · M 43 · Mairan's Nebula · NGC 1976 · NGC 1982 · Orion Nebula · Sh2-281 · The star θ1Ori · The star θ2Ori

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Messier 42 core 2022

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Messier 42 core 2022

This year's attempt at capturing the core details within the magnificent Great Orion Nebula Messier 42. Orion transits south over the top of my house at a low altitude skimming the roof for a few hours before disappearing behind one my neighbour's large Sycamore trees. So I have a limited window with less than ideal seeing. It makes for an exciting time imaging the jewels within the constellation.

I have managed to capture some of the filigree detail surrounding the Trapezium but I cannot escape my seeing or the light gathering limitations of a 5" refractor compared to a mirrored light bucket with a longer FL. This year I opted for 1 second subs as well as 5s, 10s and 30s and only broadband LRGB and decided to not gather any new Ha or use my previous year's data.

Rather than use PI's HDR composition processes I created my own masks to blend the HDR data as I found this a more effective method to preserve core detail and brightness. In this way the image is not a realistic representation of the relative brightness across the nebula. My focus was in central detail rather than gathering data to illustrated the intricate gas and dust of the outer regions.

Plenty here to keep my inspired for next year's attempt!

UK Astro-Imaging

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Status	Advanced success
Started	...
Astrometry.net job	5385295
PixInsight job	VP9RSK794BIFHYZDXSR065MXOHPWM7H1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m04s.56
RA (top/left)	05h33m31s.10
RA (top/right)	05h33m45s.83
RA (bottom/right)	05h36m38s.28
RA (bottom/left)	05h36m23s.18

Dec (center)	-05°25′59″.2
Dec (top/left)	-05°03′16″.7
Dec (top/right)	-05°51′57″.6
Dec (bottom/right)	-05°48′40″.6
Dec (bottom/left)	-04°59′59″.3

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Messier 42 core 2022

Messier 42 core 2022

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Messier 42 core 2022

Messier 42 core 2022

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