Triangle Galaxy (Messier 33)

© Stéphane Guisard "Los Cielos de Chile"

Image taken from Chile with a Takahashi TOA150 refractor (150mm diam at f/7.3), an astelco NTM500 mount and a SBIG ST11000M CCD camera + astrodon RGB filters. Exposure times are 2 hours in R, G and B. From North of Chile M33 does not go much higher than 30 degrees above the horizon which makes the photography difficult and very sensitive to turbulence. Hopefully the sky quality in the Atacama desert is also often very good . You will find below a binned version of the full field but you should also have a look at the unbinned crop of the galaxy itself  further down this page.