Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  NGC 6888
Crescent nebula, Marc
Crescent nebula
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Crescent nebula

Crescent nebula, Marc
Crescent nebula
Powered byPixInsight

Crescent nebula

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Description

The Crescent Nebula C27 in HaLRGB. Maybe worth noting that the L channel is actually a 80% Ha vs 20% L composite to tease out the nebulosity. Can't really go that deep on L alone under my mediocre skies.

Comments

Revisions

  • Crescent nebula, Marc
    Original
  • Crescent nebula, Marc
    B
  • Crescent nebula, Marc
    C
  • Final
    Crescent nebula, Marc
    D
  • Crescent nebula, Marc
    E

B

Description: Replaced L with Ha and added another 2h @ 120sec to Ha to create a HDR Version. I guess there is a way to fix the color bleed around blue stars, but I already like the look of this.

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C

Description: Increased saturation on the lower end

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D

Description: Back to 80% Ha / 20%L for Luminance and re-calibrated. Like it better this way, I think.

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E

Description: Just for fun, came across the excellent star removal module for PixInsight (https://pixinsight.com/forum/index.php?topic=13691.0). It really works with the push of a button. Some artifacts are left from very bright stars (as can be seen in this image, if you look closely) - but nothing that can't be fixed with some Photoshop magic.

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Crescent nebula, Marc