While The 17.5" Reflector Is Being Rebuilt By A Pro...

I have gone back to the 8" f/7 instead.  This is prime focus :

 

I did an eyepiece projection shot with an 18mm eyepiece along the terminator to try and get the focus right before trying for Saturn:

I didn't have the focus quite sharp enough, and then the smoke from the Bogus Basin fire made Saturn unavailable.  Maybe tomorrow night.

More Emails That I Like To Get

Clayton,
I'm still having very good success with the ScopeRollers. While I still have to polar align each time out, the benefits of having my entire rig mobile is awesome. I can set up in a fraction of the time as before, and break-down is as simple as rolling everything back into the garage - 4 minutes flat and I'm in bed for the night! Autoguiding is as good as I've ever had, so I know the ScopeRoller platform is stable. Here are two images taken with the casters in place:

http://www.astrobin.com/37359/

http://www.astrobin.com/35435/B/

Thanks!