M42 + Running Man (HaRGB) - 27 Feb 2019 (Geof Lewis)

Celestial 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 Nebula in Orion · Hatysa · M 42 · M 43 · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · Sh2-279 · Sh2-281 · The star 42Ori · The star 45Ori · The star θ1Ori · The star θ2Ori · The star ιOri

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M42 + Running Man (HaRGB) - 27 Feb 2019

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M42 + Running Man (HaRGB) - 27 Feb 2019

Here's a look atb my first attempt with mono CCD+filters at this perenial favourite, the Great Nebula in Orion. I included a few Ha subs, though I'm not sure that it really added much as the Red signal was already very strong. I shot data at 10sec, 30sec and 120sec, but didn't need the 10s subs as the core blended well enough revealing the trapezium stars using just the 30s stack.

I wish I knew what was causing the halos around the bright stars as I'm seeing this in a lot of my images. I think it's the blue channel that suffers most, so possibly seeing conditions, but they are an ongoing nuisance, which I don't know how to fix in post processing, or if that is even possible.

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B

Description: Correct N/S orientation as seen.

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Status	Advanced success
Started	...
Astrometry.net job	2557392
PixInsight job	49C565RKQPO0WDUF6MJN8AGQJ0NEBW3E
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h34m52s.30
RA (top/left)	05h37m17s.10
RA (top/right)	05h32m10s.15
RA (bottom/right)	05h32m26s.39
RA (bottom/left)	05h37m34s.32

Dec (center)	-05°21′56″.7
Dec (top/left)	-04°28′17″.9
Dec (top/right)	-04°31′21″.9
Dec (bottom/right)	-06°15′33″.8
Dec (bottom/left)	-06°12′27″.2

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M42 + Running Man (HaRGB) - 27 Feb 2019

M42 + Running Man (HaRGB) - 27 Feb 2019

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M42 + Running Man (HaRGB) - 27 Feb 2019

M42 + Running Man (HaRGB) - 27 Feb 2019

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