M78 - Dust & light (patrice_so)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: M 78 · NGC 2064 · NGC 2067 · NGC 2068 · NGC 2071

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M78 - Dust & light

Revision title: Light sharpen and light correction

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M78 - Dust & light

Revision title: Light sharpen and light correction

M78 is a magnficient object to shoot in RGB. This one is the result of several attempt ranging between March 2023 (1200s taken, including stars), and November 2023 (additional 19800s). For the initial version, I chose a fairly dark and contrasted tone. Processing was fairly straighforwad :
- stack in SIRIL
- color calibration (and all steps below) in Pixinsight
- initial gentle GHS stretch
- star removal
- NoiseX
- starless : final stretch
- starless : color saturation
- starless : extract luminance
- starless L : increase contrasts with local histogram transformation, unsharpmask, HDRMultiscaleTransform, Darkstructureenhance and curve, using masks
- LRGB to get the final starless
- stars GHS, color saturation, reduction (dilated ACDNR Mask used to erode stars before deconvolution), unsharp,
- pixelmath to assemble final image.

I plan to release a heller version after adding some further data.

Clear skies !

Original
C
Final
D

C

Title: Slightly sharpened version

Uploaded: ...

D

Title: Light sharpen and light correction

Uploaded: ...

ZWO ASI 294MC PRO
Imagers of Switzerland
Fast Newtonians

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Basic success
Started	...
Astrometry.net job	8972746
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M78 - Dust & light

Revision title: Light sharpen and light correction

M78 - Dust & light

Revision title: Light sharpen and light correction

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M78 - Dust & light

Revision title: Light sharpen and light correction

M78 - Dust & light

Revision title: Light sharpen and light correction

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Sky plot

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