Darryl,
Yes, the shorter FL comment caught me out a bit, however, the smallest one I have is the 10mm wide angle and the 10mm original plossl that came with the scope. These only give me 250x with the 2.5x barlow which is sorta kinda pushing it for fair seeing on my scope.
The eyepiece that rarely leaves the scope is the 12.5mm ED one I bought as it has astounding contrast and FOV compared to ALL the others I have, so this one is running at 200x with the Barlow.
I will have to try the 12.5, 15 and 20mm again with different combinations and camera positions/zooms as I have found that the closer I get, I sort of get a tunnel effect (cant remember what this is called) when I zoom in with the camera.
I have also noticed that at 2x optical zoom on the camera I get a really bright clear and in focus image (although smaller) but the camera cant pick up too many details at this range/size. The moment I zoom in a little more, the image starts to fade out, even though it gets bigger, and almost disappears from view on the camera's LCD screen. I think I am at the limit of the scope/camera when this happens (Sheeny called it Dawes Limit and Raleigh Limit).
The best view in the eyepiece shows me (barely) the Cassini division, but it is very hard to get focused properly through the EP first, then mount the camera, refocus (due to the extra weight of the camera changing the rack and pinion focuser slightly) and the image in the LCD screen of the camera is fairly small for camera focussing after the fitting of the adapter.
I will try out the method of infinity focus on the camera as I found out how to do this the other day after Sheeny's post elsewhere pointed me in this direction and then fine tune with the scope once mounted.
One thing that might help is a crayford 10:1 focuser? I find it very hard to get really good focus using the standard one, so perhaps I should contemplate saving up my piggy bank to get one?
Mike, thanks for the comments, the scope is the Skywatcher 5 inch newtonian with RA motor drive listed in my signature and the eyepiece was 12.5mm ED with 2,5x Barlow. The Pentax 7MP digital camera captured the shots and I processed 256 frames of 640x480 AVI stacked with registax using your method from the articles section and sharpened in Gimp2. I didnt feel the need to split the RGB channels as it was a quick and dirty run and my previous attempts / results didnt warrant the extra time on it.
I appreciate the input from all who stop by to look at my photos. Even with all the self deprecating comments I make, it is still pretty cool to be able to do this myself.
Chris