Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  Crescent Nebula, Crescent nebula, NGC 6888, NGC6888, Sh2-105
Getting plate-solving status, please wait...
Crescent Nebula Sh2 105, 



    
        

            jerryyyyy
Powered byPixInsight

Crescent Nebula Sh2 105

Technical card


Dates:July 24, 2020

Frames:
Astrodon H-alpha 5nm: 21x1800" bin 1x1
Astrodon O-III 5nm: 14x1795" bin 1x1
Astrodon S-II 5nm: 14x1800" bin 1x1

Integration: 24.5 hours

Avg. Moon age: 4.09 days

Avg. Moon phase: 17.75%


Astrometry.net job: 3695833

RA center: 20h 12' 12"

DEC center: +38° 20' 11"

Pixel scale: 1.220 arcsec/pixel

Orientation: 21.949 degrees

Field radius: 0.470 degrees


Resolution: 2263x1600

Locations: Stanford Faculty Observatory, Stanford, California, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

This is mainly for the "artistic" group to show a bit of what goes on with 3D LUT. The original color wheel has the hues around the wheel with saturation at the exterior and luminosity the white. This wheel is manipulated (among other tools) and results in the color changes seen in the after... goal is to better separate blues and reds.... move things around to map the L onto the RGB you want.

The starting point was a PixInsight PixelMath image with

R = 0.8*SII + 0.2*Ha
G =0.2*Ha + 0.8*OIII
B=OIII

This is what I use in the Tone Mapping developed by Rick Stevenson.

Comments

Author

jerryyyyy
jerryyyyy
License: None (All rights reserved)
1241
Like

Revisions

  • Crescent Nebula Sh2 105, 



    
        

            jerryyyyy
    Original
  • Final
    Crescent Nebula Sh2 105, 



    
        

            jerryyyyy
    B

B

Description: Actual image produced with settings from 3D LUT in prior screen shot.

Sky plot

Sky plot

Histogram

Crescent Nebula Sh2 105, 



    
        

            jerryyyyy