Some fun with the Canon Ra ... 5 RGB exposures + 1 star flare exposure ( both 5 minutes ) + 3 h-alpha processed in Adobe Camera Raw, aligned and combined in Registar, final image created using layers in PS CS 6. H-alpha = double the ISO and an extra 2 minutes exposure. Tracking done with a Takahashi EM200 unguided. Taken from my house in Foresthill, CA.