Narrow band - bicolor M42 (Edoardo Luca Radice (Astroedo))

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 the01 Ori · 42 c Ori · 43 the02 Ori · 44 iot Ori · 45 Ori · De Mairan's nebula · Great Nebula in Orion · Hatysa · M 42 · M 43 · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · Sh2-279 · Sh2-281 · The star 42Ori · The star 45Ori · The star θ1Ori · The star θ2Ori · The star ιOri

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Narrow band - bicolor M42

Link to TIFF/FITS: http://www.astrobin.com/rawdata/publicdatapools/9/

Powered byPixInsight

Narrow band - bicolor M42

Link to TIFF/FITS: http://www.astrobin.com/rawdata/publicdatapools/9/

Here my Interpretation of M42 in narrow band.

Data from Astrobin Public Data from user davidng

The workflow was all in PixInsight 1.8:

1) Since Ha data were saturated in the core of the nebula I composed Ha and SII data with GradientHDRComposition producing a linear HDR image

2) Linear fit of OIII on Ha-SII composite

3) DynamicAlignement of OIII on Ha-SII composite

4) AutoHistogram with Logarithmic transformation on both images

5) Denoise of OIII data with ACDNR

6) Bicolor composition with Steve Cannistra technique adapted to PixInsight using PixelMath

(read my tutorial here www.radice.biz)

7) LRGB composition using Ha-SII composite as lightness

8) BackgroundNeutralization

9) MaskedStretch to enhance faint nebulosity

10) HDRMultiscaleTransform to compress the 64bit color range (with mask)

11) Curves transformation and saturation

12) LocalHistogramEqualization (with mask)

13) SCNR for green reduction

14) Curves final tuning

per gli amici italiani il tutorial sulla composizione di Steve Cannistra è disponibile anche in italiano.

http://www.radice.biz/articoli/69-sc-bicolor-ita

Imagers of Italy

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Status	Advanced success
Started	...
Astrometry.net job	290218
PixInsight job	O3MVFF6IN9AYG4DBEFM02PJ162WHP85N
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h35m19s.90
RA (top/left)	05h39m24s.31
RA (top/right)	05h38m08s.21
RA (bottom/right)	05h31m14s.16
RA (bottom/left)	05h32m29s.57

Dec (center)	-05°23′25″.6
Dec (top/left)	-06°05′49″.9
Dec (top/right)	-04°22′08″.3
Dec (bottom/right)	-04°40′50″.8
Dec (bottom/left)	-06°24′37″.10

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Narrow band - bicolor M42

Narrow band - bicolor M42

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Narrow band - bicolor M42

Narrow band - bicolor M42

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