M101 galaxy Pentax SDUF II - 100mm f/4 ccd Sbig ST-10XME
Location: Pian dei Resinelli, Lecco, Italy May 21, 2003
LRGB 60 min.
L=4x5 min binned 1x1 R=3x5 min binned 2x2 G=3x5 min binned 2x2 B=2x5 min binned 2x2
