Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  50 zet Ori  ·  Alnitak  ·  B33  ·  Horsehead nebula  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  Orion  ·  Sh2-277  ·  The star Alnitak (ζOri)
Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
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Alnitak (Zeta Orionis) and friends

Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
Powered byPixInsight

Alnitak (Zeta Orionis) and friends

Equipment

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Acquisition details

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Description

Versions A,B and C: My 3rd attempt in three years to capture this great target from my light polluted area. Previous attempts with OSC and LRGB mono did not produce satisfactory results, with or without LP filters. I have only use RGB on this one and the result is much better. I still need to add some Ha data :-)

Version D, E, F and G: almost 3.5 Hours of Ha added. I have used the Ha to enhance both Red colour, as well as the Luminance channel, both using PixelMath, and then LRGBCombination of PixInsight. I tried to avoid the "salmon peach" colour after applying the enhanced HaL Luminance by experimenting with the amount of L and Saturation settings of the LLRGBCombination tool. I like the result much better than the RGB image of previous versions. I hope you like it, comments and critics on the the result or the procedure of combining RGB with Ha narrow-band are welcome!

Comments

Revisions

  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    Original
  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    B
  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    C
  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    D
  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    E
  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    F
  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    G
  • Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    H
  • Final
    Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou
    I

B

Description: RGB

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C

Description: RGB

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D

Description: 3.5Hours of Ha added.

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E

Description: 3.5Hours of Ha added

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F

Description: 3.5Hours of Ha added

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G

Description: 3.5Hours of Ha added

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H

Description: [Upload after crash]

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Sky plot

Sky plot

Histogram

Alnitak (Zeta Orionis) and friends, Andreas Eleftheriou