M43 - Trapezium Captured (AstroDarkSky)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 Ori A) · 41 Ori C · 41 Ori D · 42 Ori) · 43 Ori) · 44 Ori) · De Mairan's nebula · Great Orion Nebula · LBN 963 · LBN 974 · LBN 977 · LDN 1640 · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1981 · NGC 1982 · Orion Nebula · Sh2-279 · Sh2-281 · The star 45 Ori · The star Hatysa (ι Ori · The star Mizan Batil I (c Ori · The star Mizan Batil II (θ2 Ori · And 6 more.

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M43 - Trapezium Captured

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M43 - Trapezium Captured

The Orion Nebula... so easy to capture, but so difficult to get just the right exposure length! I kind of developed an unhealthy obsession over getting those 4 core stars that love to blow cores out.

I started with 60 seconds LRGB.... nope.. too much! 30 seconds? still too much at 100 gain on the 2600's. I found a sweet spot at a ridiculous 5 second exposure length. My goal was to get the clear core definition at the short exposure and HDR combine with the the longer(which was 60 seconds.and is funny in itself....) exposures.

I could not get the L channel to work for what I wanted. Pure separate R, G, B combined with short and long HDR worked. Ended up just throwing out my Luminance data. I'm thinking after the fact that reducing the gain to 0 might have worked, but I didn't have enough clear nights to experiment with another experiment permutation since it already took a month of waiting to capture the short exposures on the core.

Messier Objects
ZWO ASI2600MM Pro
William Optics GT Series

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Status	Advanced success
Started	...
Astrometry.net job	8940533
PixInsight job	8CX2TNY5JZJM64R3CT8HILAO09RZ2WTN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m01s.80
RA (top/left)	05h32m12s.73
RA (top/right)	05h32m03s.80
RA (bottom/right)	05h37m50s.28
RA (bottom/left)	05h37m58s.86

Dec (center)	-05°14′25″.5
Dec (top/left)	-04°18′06″.4
Dec (top/right)	-06°08′57″.1
Dec (bottom/right)	-06°10′45″.0
Dec (bottom/left)	-04°19′49″.6

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M43 - Trapezium Captured

M43 - Trapezium Captured

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M43 - Trapezium Captured

M43 - Trapezium Captured

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