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Contains:  NGC 6726, NGC 6723, The star εCrA
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Reflection Nebulae, Molecular Clouds and Globular Cluster in Corona Australis, 





    
        

            Scott M. Stirling
Reflection Nebulae, Molecular Clouds and Globular Cluster in Corona Australis

Reflection Nebulae, Molecular Clouds and Globular Cluster in Corona Australis

Technical card

Imaging telescope or lens:Takahashi TOA-150 Apochromatic

Imaging camera:FLI ML16200

Software:PixInsight 1.8Photos

Filter:Astrodon LRGB 6nm filters

Resolution: 9000x7200

Astrometry.net job: 2866180

RA center: 285.441 degrees

DEC center: -36.983 degrees

Pixel scale: 0.564 arcsec/pixel

Orientation: 7.082 degrees

Field radius: 0.903 degrees

Locations: Deep Sky West - Chile, Rio Hurtado, Chile

Data source: Amateur hosting facility

Remote source: DeepSkyWest

Description

Versions with differences in contrast but also in the DrizzleIntegration method options and work arounds, which left some blue and green noise pixels hidden here and there in one version posted, and left black pixels in the centers of stars in another. Pixinsight’s DrizzleIntegration’s pixel rejection, when on, left black pixels in some star centers; when off it left more noise in the channels with less data. I obtained a very clean result for L by DrizzleIntegration of a “Super Luminance” of the whole 71 subframes. For R, 23 subframes was enough to average out a good result from DI with pixel rejection enabled. For the B and R channels, 16 subframes, pixel rejection worked great except for the star centers - had to choose between a result with noise or black stars, I prefer the noise but really neither!

L = 16x 900s
R = 23x 900s
G = 16x 900s
B = 16x 900s

SuperL = 71x 900s

Comments

Author

scottstirling
Scott M. Stirling
License: None (All rights reserved)
860
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Revisions

  • Final
    Reflection Nebulae, Molecular Clouds and Globular Cluster in Corona Australis, 





    
        

            Scott M. Stirling
    Original
  • Reflection Nebulae, Molecular Clouds and Globular Cluster in Corona Australis, 





    
        

            Scott M. Stirling
    D

Sky plot

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Histogram

Reflection Nebulae, Molecular Clouds and Globular Cluster in Corona Australis, 





    
        

            Scott M. Stirling