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Contains:  Eskimo nebula, NGC 2392
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NGC 2392 - Nébuleuse du clown (version 2019), 





    
        

            Jeffbax Velocicaptor
NGC 2392 - Nébuleuse du clown (version 2019)

NGC 2392 - Nébuleuse du clown (version 2019)

Technical card

Resolution: 1540x1145

Dates:March 23, 2019

Frames: 14400x1"

Integration: 4.0 hours

Avg. Moon age: 17.49 days

Avg. Moon phase: 91.83%

Astrometry.net job: 2639907

RA center: 112.294 degrees

DEC center: 20.911 degrees

Pixel scale: 0.278 arcsec/pixel

Orientation: 338.578 degrees

Field radius: 0.074 degrees

Locations: GIMEUX, GIMEUX, CHARENTE, France

Data source: Backyard

Description

In juanuary 2017, I posted my first image on AB. It was a picture of NGC 2392 taken with an ASI 224 MC using Lucky Imaging (500 ms frames) :

2 years later (2019), I have changed my camera for an ASI 290 MMC to continue with Lucky Imaging on DSO, using shorter exposure times. I have also upgraded my scope (secondary and focuser) and tried to learn more on processing.

A few days ago, The seeing was very good here. So I decided to come back on this "eskimo" to see how I can improve the image. I took 3 hours of 200ms and 100ms frames with the ASI 290 MMC, 1 hour with the ASI 294 MC Pro for color. I mixed all the data, including the 2017 one, in a long processing session with SIRIL and AS!3, then finishing with CS. The ASI 290 MMC 100 ms data is mainly used in the center of the nebula.

The result is not a revolution as the 2017 picture was already good. But I think there are some improvements in the center. The picture is less Noisy as there is far more data. The ASI 290 makes it bigger. I made It more blue than green this time (the ASI 294 image is less green than, the ASI 224 one). Hope you enjoy.

CS

JF

Comments

Author

jeffbax
Jeffbax Velocicaptor
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Revisions

  • NGC 2392 - Nébuleuse du clown (version 2019), 





    
        

            Jeffbax Velocicaptor
    Original
  • Final
    NGC 2392 - Nébuleuse du clown (version 2019), 





    
        

            Jeffbax Velocicaptor
    B

B

Different Color balance

Sky plot

Sky plot

Histogram

NGC 2392 - Nébuleuse du clown (version 2019), 





    
        

            Jeffbax Velocicaptor