Hi, I hope you can help me solve this problem!

I have a Celestron CGEM mount with StarSense. I connect to the mount using Kstars/Ekos with the Celestron GPS driver, and essentially all of the functions work correctly, including GOTOs from Kstars, focus commands within Ekos, etc. However, the one feature that is not working for me is Capture and Solve under the alignment tab.

Here is the problem. I perform a Capture and Solve using an Atik One camera. The Star Solver reports a valid solution and some modest offset to point the telescope, usually between two and five arcminutes. Then, the telescope slews like crazy, winding in RA and Dec, sometimes orienting the telescope dangerously close to the mount and straining the camera cables.

After some frustrating experimentation, I found that these crazy slews occur for about 7 out of 10 Capture and Solve attempts. Sometimes they work, and the telescope performs an appropriate small slew, but mostly Capture and Solve with Slew to Target sends the telescope spinning.

In one experiment, the telescope finally did manage to recover pointing after a crazy slew. However, I usually have to power down the telescope to avoid collision with the pier.

For comparison, I also have StarSense on a SkyWatcher mount (EQ8-Rh), but Capture and Solve works correctly (perfectly, really) there. I have also reverted back to the NexStar+ HC on the Celestron CGEM, and Capture and Solve worked fine with NexStar+. The problem seems to be StarSense on the Celestron CGEM DX mount.

On the Celestron CGEM mount, both StarSense and the motor controllers have been updated to the latest versions (1.20 for StarSense, 6.51 for the motor controllers). I am running Kstars 3.5.0 Stable on Ubuntu 20.04.

I did some experiments last night, and I've attached the log files that were generated.

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