Tonight was experimentation. I shot the Double Cluster
for just 45 minutes......30 subs at 30 seconds, and 30 subs at 60 seconds. Not sure if it was too little time, the seeing, or my small scope. I wasn't able to cleanly resolve all the stars. The sky looked very light and hazy to me at my location, but others reported good views at nearby areas.
I also shot M51, but that was even less successful. My camera and my small 80mm refractor (400mm focal length), just isn't the right combination for objects this small. Even processing with a 2x drizzle didn't help much. In view of the sky glow, I might have been better off shooting 2 hours of 30 second exposures. As it was I did and hour of 60 seconds subs.
I did an hour and 15 minutes of NGC 891, but that was not worth keeping. The galaxy is barely visible, even in the stacked image.
Scope: Oreion 80mm ST refractor
Mount: Celestron CG5 GT (unguided)
Camera: Canon 350D (unmodified)
Reprocessed and reposted the two images. Neil came over last night and gave me some hands on instruction is using Deep Sky Stacker more correctly. Thank you, Neil. Both images are improved.....cleaner, more natural and not stretched beyond the data.