Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  NGC 6888
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Crescent at 0.5"/pixel based on Ha L OIII data, Alex Varakin
Crescent at 0.5"/pixel based on Ha L OIII data
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Crescent at 0.5"/pixel based on Ha L OIII data

Getting plate-solving status, please wait...
Crescent at 0.5"/pixel based on Ha L OIII data, Alex Varakin
Crescent at 0.5"/pixel based on Ha L OIII data
Powered byPixInsight

Crescent at 0.5"/pixel based on Ha L OIII data

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Description

This is a close up of Crescent. I used the following PixelMath formula for producing this image:

Red = H

Green = 0.4*O+H*0.1+0.5*L

Blue = 0.8*O+H*0.2

I did not see much of SII signal in this object, so I stopped taking it and instead just took a little bit of Luminance which was mixed into Green channel.

Comments

Revisions

  • Crescent at 0.5"/pixel based on Ha L OIII data, Alex Varakin
    Original
  • Crescent at 0.5"/pixel based on Ha L OIII data, Alex Varakin
    B
  • Final
    Crescent at 0.5"/pixel based on Ha L OIII data, Alex Varakin
    C

B

Description: Enhanced blue channel to show outer OIII shell

Uploaded: ...

C

Description: Major reprocess. Reduced clipping and noise

Uploaded: ...

Sky plot

Sky plot

Histogram

Crescent at 0.5"/pixel based on Ha L OIII data, Alex Varakin

In these public groups

Suburban Astrophotography