I understand that my sct focus knob moves the primary. After 3 months of using this, my first scope, I've found that the knob doesn't allow for very fine ficus control and there is significant vibration at med-high powers.
What alternative options are there? I'm strictly visual at present but getting started with dslr prime focus.
Get a 10:1 micro focuser from starizona. They're very good value for money. Garry Beal (gbeal) had one for sale on the classified not long ago. Check if it's still for sale.
I have wondered about them, but there is no way to lock the mirror in place so mirror flop is still possible.
I put a featertouch on my C925 and it is a big improvement on the standard focusser. Have a look on their website, they have a sales page for cosmetic seconds which mine is but I can not find a blemish of any sort. Maybe the anodising is not the right colour.
Hemi,
Yes, a DSLR will still fit.....
The microfocuser also improves any residual mirror flop due to the more rigid/ robust/ quality connection between the mirror and the rear cell.
I had very little mirror flop/flop on the C9.25 and even better on my C11.
I fitted one ot these , very nice bit of gear just be sure to get the right one as there are 2 types for the C9.25;s .
