I took this picture of Saturn on 3/30/2009 with my Celestron CST 9″1/4 OTA. The rings are at about 3 degrees of inclination. This picture is a stack of 45 frames processed with Registax V5. Turbulence was noticeable at 150x. The scope was roughly collimated using “Bob’s knobs”.
I took this picture of Saturn on 4/4/2009 with the same configuration. This picture is a stack of 90 frames processed with Registax V5. Turbulence was noticeable at 150x. The cassini’s division can be guessed – even though it does not appear clearly. The scope was roughly collimated using “Bob’s knobs”.
Astrophotography in Urban Environment 