Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 109  ·  NGC 3992
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NGC 3992 (aka M109), LRGB, AnaTa
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NGC 3992 (aka M109), LRGB

Getting plate-solving status, please wait...
NGC 3992 (aka M109), LRGB, AnaTa
Powered byPixInsight

NGC 3992 (aka M109), LRGB

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Acquisition details

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Description

Transparency was awful during imaging. Awful almost every day. This year's weather is very strange. 
Some types of thin clouds are present almost daily. Just could not pull faint nebulosity around galaxy; it was swamped by background. 

Processing:
RGB are combined.
Cropping for RGB and Lum
Color Colib for RGB
Blur and Noise XT for RGB and Lum
Manual stretching (with HT) RGB and Lum
LRGB 
Noise XT again
Stretching again
Star XT. These stars have been saved for processing. 
Simple Lum mask 
Reduction of background with Curves. 
Local Histogram Equalization: Kernel radius of 40, 80 and then 150
Multiscale-median transform for sharpness. 
Curves: saturation and brightness are manipulated.
Mask off.
Saturated stars are added.
Done

Comments

Revisions

  • NGC 3992 (aka M109), LRGB, AnaTa
    Original
  • Final
    NGC 3992 (aka M109), LRGB, AnaTa
    C

Sky plot

Sky plot

Histogram

NGC 3992 (aka M109), LRGB, AnaTa

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Galaxies (NGC)