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Contains:  NGC 2239, NGC 2244, NGC 2252, Rosette nebula, The star 12Mon
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NGC 2237 - Rosette nebula (Ha-SHO), 


            Olivier Ravayrol
NGC 2237 - Rosette nebula (Ha-SHO)
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NGC 2237 - Rosette nebula (Ha-SHO)

Technical card

Dates:Jan. 4, 2019Feb. 24, 2019Feb. 25, 2019

Astronomik CCD Ha 12nm Canon EOS Clip: 28x360" ISO800 3C bin 1x1
Astronomik CCD OIII 12nm Canon EOS Clip: 22x300" ISO800 16C bin 1x1
Astronomik CCD SII 12nm Canon EOS Clip: 28x300" ISO800 17C bin 1x1

Integration: 7.0 hours

Darks: ~5

Flats: ~26

Bias: ~50

Avg. Moon age: 23.14 days

Avg. Moon phase: 44.37%

Bortle Dark-Sky Scale: 5.00

Temperature: 12.50

Basic astrometry details job: 3250028

RA center: 6h 31' 53"

DEC center: +4° 56' 45"

Pixel scale: 2.255 arcsec/pixel

Orientation: 268.527 degrees

Field radius: 1.582 degrees

Resolution: 4223x2771

Locations: Observatoire personnel, Tournefeuille, Haute-Garonne, France

Data source: Own remote observatory


Tournefeuille, France
Ha-SHO (Luminance with Ha, color with Ha,OIII,SII filters narrow band 12nm)
Ha:2h48, OIII:1h50, SII:2h20mn exposure time - 800 iso
600/80 mm Refractor – EOS 450D filter removed
Preprocessing with SIRIL
Image processing with Photoshop
Final touch with Lightroom



Olivier Ravayrol
License: None (All rights reserved)


  • NGC 2237 - Rosette nebula (Ha-SHO), 


            Olivier Ravayrol
  • Final
    NGC 2237 - Rosette nebula (Ha-SHO), 


            Olivier Ravayrol


Description: White balance optimisation

Sky plot

Sky plot


NGC 2237 - Rosette nebula (Ha-SHO), 


            Olivier Ravayrol