- focus mode
Installation is straightforward for the Rasa 8. The instructions are clear. Calibration using an Ascom user interface leads you to hav to enter a backlash figure and the suggested number (50 or so) is way too high. Using the CPWI (I have my Rasa mounted on an AVX), makes it a breeze and calibration went on smoothly with no issue, and CPWI figured out the backlash on its own (I have no idea what it is, nor does it seem to matter). I use NINA to image and autofocus worked like a charm using CPWI as the ascom connection. Overall, quite happy with this focuser.
On a C-14 SCT it works fine. Handblock has to have the latest firmware. My only issue is that when in focus mode, the slow motions don't work.Since it is moving the mirror, the star moves in the field and you can't bring it back without going oout of focus mode. A minor inconvenience. OPT as always delivered in a timely fashion.
I put this on my Nexstar 6SE. Fairly easy to install. I got it the first time. Fairly quiet. The real benefit is using it on a Celestron mount which supplies the power and a hand control for focusing manually if you do not want to be tied to a PC. In stock and prompt shipping from OPT!
Now that celestron has modified the design slightly, it actually fits on my 9.25 edge. The original was a couple MM too large and had to be sent back. This is a solid and verges to install focus motor and works fine with Ascom drivers or their own software. Installation was under 5 minutes, msot of which was just reading the instructions. If you own a Celestron SCT, this is a solid and affordable focuser.
Very hard to find information on how to operate it. Now no problems, Thanks