M42 center part, a mixed Lum, PI Bi-Color picture, version3 (Niels V. Christensen)

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

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M42 center part, a mixed Lum, PI Bi-Color picture, version3

Powered byPixInsight

M42 center part, a mixed Lum, PI Bi-Color picture, version3

A M42 center mixed Luminance PixInsight Bi-Color Ha, OIII narrowband picture. My 3. & last attempt on a suitable picture processing method.

Thanks to the guys who mentioned/showed this PixInsight pixelmath formula,

RED: iif(HaMixPI>.15,HaMixPI,(HaMixPI*.8)+(OIIIMixPI*.2))

GREEN: iif(HaMixPI>0.5,1-(1-OIIIMixPI)*(1-(HaMixPI-0.5)),OIIIMixPI*(HaMixPI+0.5))

BLUE: iif(OIIIMixPI>.1,OIIIMixPI,(HaMixPI*.3)+(OIIIMixPI*.2))

Usage of the pixelmath function can be seen here, a PC screen shot,

PI pixelmath screenshot

Manually quality sorted frames were stacked like this:

Lum: 68x1sec. SII: 32x10sec+45x30sec. Ha: 35x10sec+30x30sec. OIII: 83x5sec+26x30sec.

More details about the raw matrial can be shown upon request/if needed, thanks a lot.

My home build observatory is placed in my front yard/in the "red light" polution zone, have a look here,

Red Zone

CS Niels

Schmidt-Cassegrain Telescope (SCT) Imagers
"Nordish by nature"
Narrowband imaging

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Status	Advanced success
Started	...
Astrometry.net job	2353084
PixInsight job	14X3VXXGK9A91DXL3IJZQ95XCB143CFV
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m18s.158
RA (top/left)	05h35m02s.287
RA (top/right)	05h34m34s.994
RA (bottom/right)	05h35m34s.360
RA (bottom/left)	05h36m01s.315

Dec (center)	-05°23′47″.26
Dec (top/left)	-05°11′18″.84
Dec (top/right)	-05°31′14″.60
Dec (bottom/right)	-05°36′15″.83
Dec (bottom/left)	-05°16′19″.66

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M42 center part, a mixed Lum, PI Bi-Color picture, version3

M42 center part, a mixed Lum, PI Bi-Color picture, version3

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M42 center part, a mixed Lum, PI Bi-Color picture, version3

M42 center part, a mixed Lum, PI Bi-Color picture, version3

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