M42 in a narrowband HOO bicolor palette (Stanley Dimant)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Great Nebula in Orion · M 42 · M 43 · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1981 · NGC 1982 · The star 42Ori · The star 45Ori · The star θ1Ori · The star θ2Ori · The star ιOri

M42 in a narrowband HOO bicolor palette, Stanley Dimant

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M42 in a narrowband HOO bicolor palette

Link: https://www.facebook.com/darkSkiesAstro/photos/a.650097875192577.1073741828.650064481862583/722949447907419/?type=3&theater

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M42 in a narrowband HOO bicolor palette

Link: https://www.facebook.com/darkSkiesAstro/photos/a.650097875192577.1073741828.650064481862583/722949447907419/?type=3&theater

First narrowband color combination, I am hooked!

Processing:

Normal image integration process for OIII and H-Alpha for each exposure time (ImageCalibration, CosmeticCorrection, SubframeSelection, StarAlignment, Local Normalization, Integration, Drizzle Integration at 2× scale)

DBE for each image separately

HDR Combination for OIII and H-Alpha each

Star Alignment OIII to H-Alpha

LinearFit OIII to H-Alpha

PixelMath for HOO color palette (R=H, G=0.65×O+0.35×H, B=0.8×O+0.2×H)

Dynamic Crop for rotated edges

SCNR Green on Background to remove the green cast

Deconvolution for sharpening

Jon Ristas method for denoising: TGVDenoise followed by MultiScaleMedianTransform (first for Luminance, then for Chrominance)

Slight ArcSinStretch to boost colors while simultaneously slightly stretching the image

HistogramTransformation for final stretching

HDRMultiscaleTransform with 7 layers to bring out the core

LocalHistogramEqualization with an inverted star mask

CurvesTransformation, boosting the saturation

CurvesTransformation with lightness mask, increasing the contrast

GradientHDRCompression for increasing the contrast

HistogramTransformation to shift the midpoint and make the image brighter

MultiscaleMedianTransform for sharpening

Resample to 75% and export to Lightroom as 16bit tif

Export as JPEG

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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	1860686
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M42 in a narrowband HOO bicolor palette

M42 in a narrowband HOO bicolor palette

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Image Index:

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M42 in a narrowband HOO bicolor palette

M42 in a narrowband HOO bicolor palette

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