Question M-Due guiding accuracy with PHD2

Assuming a well balanced OTA (EdgeHD 8"), no wind, and a stable platform, what is normal for total RMS error in PHD2 with the M-Due? I'm getting first light right now, and averaging about 0.71" total RMS.

I have the M-UNO run by the new StarGo2 controller. Telescope is a GSO RC10.

Did you by any chance try the internal EKOS guider? I could not get it to work. After calibration and a few seconds of guiding, the guider stops and says “mount is slewing”, which is obviously not the case.

I will try PHD2 once weather permits.

Below is my guiding log from EKOS using the internal guiding procedure.

I cannot get it to do any guiding!

2021-10-27T22:44:13 Autoguiding aborted.
2021-10-27T22:44:13 Mount is slewing. Aborting guide...
2021-10-27T22:44:13 Calibration is cleared.
2021-10-27T22:44:13 Mount is moving. Resetting calibration...
2021-10-27T22:43:57 DEC swap disabled.
2021-10-27T22:43:57 Autoguiding started.
2021-10-27T22:43:57 Calibration completed.
2021-10-27T22:43:54 Calibration is cleared.
2021-10-27T22:43:54 Mount is moving. Resetting calibration...
2021-10-27T22:43:50 Calibration is cleared.
2021-10-27T22:43:50 Mount is moving. Resetting calibration...
2021-10-27T22:43:45 Calibration is cleared.
2021-10-27T22:43:45 Mount is moving. Resetting calibration...
2021-10-27T22:43:43 Calibration is cleared.
2021-10-27T22:43:43 Mount is moving. Resetting calibration...
2021-10-27T22:43:39 Calibration is cleared.
2021-10-27T22:43:39 Mount is moving. Resetting calibration...
2021-10-27T22:43:35 Calibration is cleared.
2021-10-27T22:43:35 Mount is moving. Resetting calibration...
2021-10-27T22:43:34 DEC drifting reverse...
2021-10-27T22:43:31 Calibration is cleared.
2021-10-27T22:43:31 Mount is moving. Resetting calibration...
2021-10-27T22:43:27 Calibration is cleared.
2021-10-27T22:43:27 Mount is moving. Resetting calibration...
2021-10-27T22:43:23 Calibration is cleared.
2021-10-27T22:43:23 Mount is moving. Resetting calibration...
2021-10-27T22:43:22 DEC drifting forward...
2021-10-27T22:43:18 Calibration is cleared.
2021-10-27T22:43:18 Mount is moving. Resetting calibration...
2021-10-27T22:43:16 Calibration is cleared.
2021-10-27T22:43:16 Mount is moving. Resetting calibration...
2021-10-27T22:43:15 DEC backlash...
2021-10-27T22:43:12 Calibration is cleared.
2021-10-27T22:43:12 Mount is moving. Resetting calibration...
2021-10-27T22:43:06 Calibration is cleared.
2021-10-27T22:43:06 Mount is moving. Resetting calibration...
2021-10-27T22:43:02 Calibration is cleared.
2021-10-27T22:43:02 Mount is moving. Resetting calibration...
2021-10-27T22:43:02 RA drifting reverse...
2021-10-27T22:43:00 Calibration is cleared.
2021-10-27T22:43:00 Mount is moving. Resetting calibration...
2021-10-27T22:42:56 Calibration is cleared.
2021-10-27T22:42:56 Mount is moving. Resetting calibration...
2021-10-27T22:42:52 Calibration is cleared.
2021-10-27T22:42:52 Mount is moving. Resetting calibration...
2021-10-27T22:42:51 RA drifting forward...
2021-10-27T22:42:51 Calibration started.
2021-10-27T22:42:49 Auto star selected.
2021-10-27T22:42:26 Failed to select an auto star.
2021-10-27T22:42:06 Lost track of the guide star. Try increasing the square size or reducing pulse duration.
2021-10-27T22:42:04 Calibration is cleared.
2021-10-27T22:42:04 Mount is moving. Resetting calibration...
2021-10-27T22:42:01 Calibration is cleared.
2021-10-27T22:42:01 Mount is moving. Resetting calibration...
2021-10-27T22:42:00 RA drifting reverse...
2021-10-27T22:41:58 Calibration is cleared.
2021-10-27T22:41:58 Mount is moving. Resetting calibration...
2021-10-27T22:41:55 Calibration is cleared.
2021-10-27T22:41:55 Mount is moving. Resetting calibration...
2021-10-27T22:41:52 Calibration is cleared.
2021-10-27T22:41:52 Mount is moving. Resetting calibration...
2021-10-27T22:41:51 RA drifting forward...
2021-10-27T22:41:51 Calibration started.
2021-10-27T22:41:51 Auto star selected.
2021-10-27T22:41:29 Calibration is cleared.
2021-10-27T22:41:29 Mount is moving. Resetting calibration...
2021-10-27T22:40:48 Calibration is cleared.
2021-10-27T22:40:48 Mount is moving. Resetting calibration...
2021-10-27T22:40:46 Calibration is cleared.
2021-10-27T22:40:46 Mount is moving. Resetting calibration...
2021-10-27T22:37:20 Calibration is cleared.
2021-10-27T22:37:20 Mount is moving. Resetting calibration...
2021-10-27T22:37:18 Calibration is cleared.
2021-10-27T22:37:18 Mount is moving. Resetting calibration...
2021-10-27T22:37:16 Calibration is cleared.
2021-10-27T22:37:16 Mount is moving. Resetting calibration...
2021-10-27T22:35:41 Autoguiding aborted.
2021-10-27T22:35:41 Mount is slewing. Aborting guide...
2021-10-27T22:35:41 Calibration is cleared.
2021-10-27T22:35:41 Mount is moving. Resetting calibration...
2021-10-27T22:35:28 DEC swap disabled.
2021-10-27T22:35:28 Autoguiding started.
2021-10-27T22:35:28 Calibration completed.
2021-10-27T22:35:27 Calibration is cleared.
2021-10-27T22:35:27 Mount is moving. Resetting calibration...
2021-10-27T22:35:24 Calibration is cleared.
2021-10-27T22:35:24 Mount is moving. Resetting calibration...
2021-10-27T22:35:21 Calibration is cleared.
2021-10-27T22:35:21 Mount is moving. Resetting calibration...
2021-10-27T22:35:18 Calibration is cleared.
2021-10-27T22:35:18 Mount is moving. Resetting calibration...
2021-10-27T22:35:15 Calibration is cleared.
2021-10-27T22:35:15 Mount is moving. Resetting calibration...
2021-10-27T22:35:14 DEC drifting reverse...
2021-10-27T22:35:12 Calibration is cleared.
2021-10-27T22:35:12 Mount is moving. Resetting calibration...
2021-10-27T22:35:09 Calibration is cleared.
2021-10-27T22:35:09 Mount is moving. Resetting calibration...
2021-10-27T22:35:06 Calibration is cleared.
2021-10-27T22:35:06 Mount is moving. Resetting calibration...
2021-10-27T22:35:04 DEC drifting forward...
2021-10-27T22:35:03 Calibration is cleared.
2021-10-27T22:35:03 Mount is moving. Resetting calibration...
2021-10-27T22:35:00 Calibration is cleared.
2021-10-27T22:35:00 Mount is moving. Resetting calibration...
2021-10-27T22:34:58 DEC backlash...
2021-10-27T22:34:57 Calibration is cleared.
2021-10-27T22:34:57 Mount is moving. Resetting calibration...
2021-10-27T22:34:54 Calibration is cleared.
2021-10-27T22:34:54 Mount is moving. Resetting calibration...
2021-10-27T22:34:51 Calibration is cleared.
2021-10-27T22:34:51 Mount is moving. Resetting calibration...
2021-10-27T22:34:49 RA drifting reverse...
2021-10-27T22:34:48 Calibration is cleared.
2021-10-27T22:34:48 Mount is moving. Resetting calibration...
2021-10-27T22:34:45 Calibration is cleared.
2021-10-27T22:34:45 Mount is moving. Resetting calibration...
2021-10-27T22:34:42 Calibration is cleared.
2021-10-27T22:34:42 Mount is moving. Resetting calibration...
2021-10-27T22:34:40 RA drifting forward...
2021-10-27T22:34:40 Calibration started.
2021-10-27T22:34:40 Auto star selected.

I have not tried the internal software. Prior to the M-Due I was using NINA on a Windows PC, so that's what I'm continuing to do with the M-Due. I'm using the StarGo2 only as a passthrough for NINA and PHD2. I've also only had one clear night since getting the mount, so I have no additional data points beyond what I shared above. With the M-Due having absolute encoders, Stefano has advised in another thread to disable "Use Encoder Correction" when using PHD2. It was enabled for my first (and so far only) session. I'll try disabling that next time, but I do wonder what the point of having the encoders is if their corrections are disabled when guiding.

www.avalon-instruments.com/forum/mounts-...due-keypad-hangs#707

Thank you for the detailed feedback. I will try with PHD2 and INDIGO AstroGuider once weather permits.

Disabling encoders is kind of pointless, I agree. It depends on how they are integrated in the whole control process. An external software would have issues. So Avalon would need to provide an integrated solutions.

How do I set the AutoGuide Speed for the M-due? For my EdgeHD 8" I should be using 0.15 sidereal for RA and 0.25 for DEC

www.avalon-instruments.com/support-2/tro...suggested-parameters

However when I checked my PHD2 logs it shows I'm about about 1800x Sidereal:

RA Guide Speed = 27073.9 a-s/s, Dec Guide Speed = 27073.9 a-s/s, Cal Dec = 0.0, Last Cal Issue = None, Timestamp = 10/29/2021 8:46:42 PM