Hemisphere:  Northern
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Fantôme de Céphée, 



    
        

            Jeffbax Velocicaptor
Fantôme de Céphée
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Fantôme de Céphée

Technical card

Imaging telescopes or lenses: TS Optics RC 14" Ritchey Chretien

Imaging cameras: ZWO ASI 294MC Pro  ·  Moravian G2-4000

Mounts: EQ 8

Software: Topaz DeNoise 6  ·  SIRIL  ·  ADOBE Photoshop CS2


Dates:Oct. 18, 2020

Frames:
85x300" bin 1x1
145x300" bin 2x2

Integration: 19.2 hours

Darks: ~21

Avg. Moon age: 1.96 days

Avg. Moon phase: 4.28%

Bortle Dark-Sky Scale: 4.00


Basic astrometry details

Astrometry.net job: 3989082

RA center: 21h 16' 15"

DEC center: +68° 16' 40"

Pixel scale: 0.539 arcsec/pixel

Orientation: 214.894 degrees

Field radius: 0.182 degrees


Resolution: 1944x1465

Locations: Observatoire du Calvados, Calvados, CALVADOS, France

Data source: Backyard

Description

This ghost gave me a lot of work. The signal was very diffcult to extract from the background as the flats were not good. My friend Philippe Lamothe sent me the data to see what surgery was possible. I made a synthetic flat with CS and tried to adjust it the best way. I also used localised masks and Density Tools to get the signal out of the background and correct some donuts.

The image is taken with an Moravian G2-4000 ( 85 x 300s) and the ASI 294 Pro (185 x 300s).

As a result, there are still some regions with noise and a few signal issues in the low lights, but I like it anyway. We saved these 20 hours data :)

JF

Comments

Author

jeffbax
Jeffbax Velocicaptor
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Revisions

    Fantôme de Céphée, 



    
        

            Jeffbax Velocicaptor
    Original
  • Final
    Fantôme de Céphée, 



    
        

            Jeffbax Velocicaptor
    B

B

Description: Slight noise correction and fat stars spikes corrected.

Sky plot

Sky plot

Histogram

Fantôme de Céphée, 



    
        

            Jeffbax Velocicaptor