M51, the Whirlpool Galaxy, photographed from OMSI's Hancock Field Station May, 2002.
12" F/10 LX200 SCT with F/6.7 Lumicon Focal reducer
90 Minute Exposure
Hypered Kodak Royal Gold 200 hypered at home: 50c, +3psi, 2hrs.
Autoguided with SBIG STV autoguider. During the exposure the STV indicated that it was fighting with the mount producing an oscilating error of +/- 2 or more in one axis.