Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  41 Ori A)  ·  41 Ori C  ·  41 Ori D  ·  42 Ori)  ·  43 Ori)  ·  44 Ori)  ·  Great Orion Nebula  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1982  ·  Orion Nebula  ·  The star 45 Ori  ·  The star Hatysa (ι Ori  ·  The star Mizan Batil I (c Ori  ·  The star Mizan Batil II (θ2 Ori  ·  The star Trapezium (θ1 Ori A  ·  The star θ1 Ori C  ·  The star θ1 Ori D  ·  the Running Man Nebula
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M42, John Reed
M42
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M42

Revision title: Deleted the Pixinsight HDR function and used Pixelmath.

Getting plate-solving status, please wait...
M42, John Reed
M42
Powered byPixInsight

M42

Revision title: Deleted the Pixinsight HDR function and used Pixelmath.

Equipment

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Acquisition details

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Description

Broadband shot.  16 bit camera just manages to keep both the core and the whispies.

Comments

Revisions

  • M42, John Reed
    Original
  • M42, John Reed
    B
  • Final
    M42, John Reed
    C

B

Title: New version with narrowband data and HDR transformation

Description: HDR is to keep the highlights from being clipped. Even the Trapezium is visible.

Uploaded: ...

C

Title: Deleted the Pixinsight HDR function and used Pixelmath.

Description: The NBRGBcombination script was not giving predictable results so went back to Pixelmath:
HaNew=Ha-R*.1
Rnew=R+(HaNew-med(HaNew)*.9

Uploaded: ...

Sky plot

Sky plot

Histogram

M42, John Reed