Trapezium Cluster in Messier 42 - this is the Lum data for my previous post. (Robertson Miller)

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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Trapezium Cluster in Messier 42 - this is the Lum data for my previous post.

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Trapezium Cluster in Messier 42 - this is the Lum data for my previous post.

See my previous post of M42 false-color image using this luminance data.

Two evenings ago, with Orion low on the western horizon, the clouds parted for about an hour shortly after sunset. Just enough time for me to grab 40 frames of Luminance data, 20@60s, 20@30s and 20@10 seconds. Then, as is often the case around here, the clouds closed in.

Last evening, contrary to the Clear Sky Clock prediction, the sky cleared for about an hour, again, shortly after sunset. I took that chance to grab 20 frames each of Ha, Oiii and Sii, 3nm. With the luminance data from the night before I created this false-color image of the Trapezium area. I accidentally misassigned the RGB channels from what I intended but decided I liked the result.

Ha -> Red channel
Oiii -> Green channel
Sii-> Blue channel

Luminance is a mix of both 60s and 10s frames to bring out both the core and outer regions.

I love the way the luminance data restores the tiny stars missing in the narrowband images.

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Status	Advanced success
Started	...
Astrometry.net job	5637855
PixInsight job	ATF909X750DLTKNYHUQX8W8EI7PCRQH0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m25s.173
RA (top/left)	05h36m26s.152
RA (top/right)	05h34m27s.176
RA (bottom/right)	05h34m24s.557
RA (bottom/left)	05h36m23s.302

Dec (center)	-05°24′54″.47
Dec (top/left)	-05°15′34″.21
Dec (top/right)	-05°14′38″.97
Dec (bottom/right)	-05°34′20″.10
Dec (bottom/left)	-05°35′11″.79

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Trapezium Cluster in Messier 42 - this is the Lum data for my previous post.

Trapezium Cluster in Messier 42 - this is the Lum data for my previous post.

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Trapezium Cluster in Messier 42 - this is the Lum data for my previous post.

Trapezium Cluster in Messier 42 - this is the Lum data for my previous post.

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