Lorenzo Siciliano

Messier 51

Celesron C-11 @ 3100mm and 1920mm

SBIG ST8-XME

EQ6 mount

April 11 and May 12, 2009 and May 9, 2010

Potenza, Italy

7 - 15-minute subexposures @ 3100mm; 9 - 20-minute subexposures @ 3100mm 9 - 10-minute subexposures @ 1920mm

6.25 hours total exposure time

Maxim DL, Photoshop CS2