Hi myxlflik(?)
Just want to share that I'm using the Orion SSAG successfully with boult in ekos guider.
That's a truth with some modifications. It does work with Celestron AVX with 'Guiding Via' set to celestron gps, and use pulse cmd set in the celestron driver.
I have also one or two times managed to calibrate with 'Guiding via' QHY5, but it seams more likely to fail.
I would like to add that i have never had any issues connecting the SSAG and getting images from it. It's always the calibration that is the tricky part.
Just an half hour ago or something I had ha patch of clear skies, opened up my roof calibrated and started guiding. (Then as always a lot of clouds! [damit!])
Some notes about maximizing the chance of success. Polar aligning is a lot more important than PHD2 on Windows. When I was using windows I could point my scope to north with a Android compass and set the mount to 59deg and PHD2 would calibrate. This does not work with the built in ekos guider (atleast not with SSAG).
By using the Polar alignment tool in Alignment module I now have ~35 sec error in Az error and ~15 sec error in Alt. The one thing that makes the PA tool difficult to use is that it uses 'Capture and Slew'. This does not work with a poor PA. As the images are downloaded and the solver solves, then the scope has drifted away from the solution in time for it to solve. I always ended up getting closer and closer until the solver error was more or less the same every time.
My fix to this was to set to 'Capture and Sync' Every time the solver syncs then
slew to the middle of the solution back to the intended target, and the PA tool continues. Not sure but I suspect the tool might be less accurate this way?, however you will get close enough to eventually re run the tool with 'Capture and Slew' and so complete a good PA. Not sure that my PA with 35 sec and ~15sec is the best, but it's all that i had (time) for in the cold weather.
I'm not sure what the Celestron driver's 'Pulse CMD' does and why th SSAG is more likely to complete calibration when it's done. The 'Guide Via' option does make Ekos send guide signals directly to the mount, so the guiding part of the SSAG is not used, and the ST-4 port is bypassed. (at this point I think the SSAG is reduced to a camera, and non of the guiding capabilities of the device is used).
Figured this could be useful info for some people with the SSAG.
Picture of todays guiding. (not very good seeing, so the guide graph is a little wobbly)