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Contains:  M 33, NGC 598, Triangulum galaxy
Getting plate-solving status, please wait...
M33 - The Triangulum Galaxy (L-RGB), 


            Olivier Ravayrol
M33 - The Triangulum Galaxy (L-RGB)
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M33 - The Triangulum Galaxy (L-RGB)

Technical card

Dates:Sept. 21, 2015

Frames:Astronomik CCD CLS Canon EOS Clip: 15x300" ISO800

Integration: 1.2 hours

Darks: ~6

Flats: ~11

Bias: ~100

Avg. Moon age: 7.51 days

Avg. Moon phase: 51.40%

Bortle Dark-Sky Scale: 5.00

Basic astrometry details job: 3249996

RA center: 1h 33' 39"

DEC center: +30° 40' 55"

Pixel scale: 1.063 arcsec/pixel

Orientation: 287.526 degrees

Field radius: 0.761 degrees

Resolution: 4290x2856

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

Data source: Own remote observatory


L-RGB (synthetic luminance)
1h15 exposure time at 800 iso (Tournefeuille, France)
Newton telescop 200/1000 – 450D EOS filter removed
CLS filter (due to light pollution conditions)
Preprocessing with IRIS (Christian Buil software)
Image processing with Photoshop
Final touch with Lightroom



Olivier Ravayrol
License: None (All rights reserved)


  • M33 - The Triangulum Galaxy (L-RGB), 


            Olivier Ravayrol
  • Final
    M33 - The Triangulum Galaxy (L-RGB), 


            Olivier Ravayrol


Description: Gradient / HLVG treatment before noise reduction - Noise reduction weaker

Sky plot

Sky plot


M33 - The Triangulum Galaxy (L-RGB), 


            Olivier Ravayrol