M101 Galaxy in Ursa Major
 
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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: LRB 620:180:240
Date / Location / Sky: March 2012 Cota Observatory - Troina (EN), 550 m. s.l.
FWHM: 3.2" Sky luminosity: 21.2 mag. per squared arcsec
Software: MaxIm-DL, CCDStack, PhotoShop