M51 galaxy in Canes Venatici
 
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Telescope: Officina Stellare RC Pro 12,5" with focal reductor f/6.7, 2134 mm
CCD Camera: SBIG STL-6303
Mount: German equatorial mount Astro-Physics 1200 GTO
Integration: LRGB 360:30:30:30
Date / Location / Sky: 21, 22,23 May; 13 June 2009 Tuscany, Mt. Amiata; Sicily, Nebrodi Mounts
FWHM: 2.4" (exp. 10 m.) Sky luminosity: 21.5 mag. per squared arcsec
Software: MaxIm-DL, Registar, CCDStack, PhotoShop