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 Orion Nebula  ·  Hatysa  ·  IC 420  ·  LBN 963  ·  LBN 974  ·  LBN 977  ·  LDN 1640  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  Orion Nebula  ·  Sh2-279  ·  Sh2-281  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  And 5 more.
M42 The Great Orion Nebula  Ha(Lum) + OSC Complete Redo Edit with Improved Core, Brandon Tackett
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M42 The Great Orion Nebula Ha(Lum) + OSC Complete Redo Edit with Improved Core

M42 The Great Orion Nebula  Ha(Lum) + OSC Complete Redo Edit with Improved Core, Brandon Tackett
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M42 The Great Orion Nebula Ha(Lum) + OSC Complete Redo Edit with Improved Core

Equipment

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Acquisition details

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Description

My goal was to use HDR composition to really bring out the core well. As you can see, this was a marked improvement from my previous effort (https://www.astrobin.com/b9xbow/?nc=user). I had captured decent data from 5, 10, 30, and 60 OSC color subs, but restacked each of them. I eventually realized that some how the stacks had been just slight off on the star alignment and likely caused all my problems with my previous edit regarding the core. My first edit took three times the amount of time my second edit did because the core was significantly improved. I used HDR composition in the linear state in pixinsight and then used HDRMT to improved the core in the non linear state.

I again added 2 min Ha captures to increase the surrounding dust in the luminance layer.

I am pleased to finally get a capture of the Orion Nebula and the redo edit was much more of what I had hope to accomplish. I still consider it the third rail of astrophotography. Easy to see and capture, but hard capture the core well without suffering the consequences.

The nebula itself is a diffuse hydrogen emission nebula approximately 1300 light years away in the Orion spur of the Perseus arm of the Milky Way. The nebula is approximately 24 light years across and contains the equivalent mass of the 2000 times the sun. This is the location of the nearest significant star formation region near earth. The nebula can easily be viewed as the mild “star” of the Orion sword scabbard.

Comments

Revisions

  • M42 The Great Orion Nebula  Ha(Lum) + OSC Complete Redo Edit with Improved Core, Brandon Tackett
    Original
  • M42 The Great Orion Nebula  Ha(Lum) + OSC Complete Redo Edit with Improved Core, Brandon Tackett
    B
  • Final
    M42 The Great Orion Nebula  Ha(Lum) + OSC Complete Redo Edit with Improved Core, Brandon Tackett
    C
  • M42 The Great Orion Nebula  Ha(Lum) + OSC Complete Redo Edit with Improved Core, Brandon Tackett
    D

B

Description: Cropped version of the core

Uploaded: ...

C

Description: Decreased brightness

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D

Description: M42 Starlite using Starnet++ and GAME script to mask the brightest starss

Uploaded: ...

Sky plot

Sky plot

Histogram

M42 The Great Orion Nebula  Ha(Lum) + OSC Complete Redo Edit with Improved Core, Brandon Tackett