Hi there,

I am experiencing some dithering failures with Ekos and PHD2 with my EQmod mount since I updated to Kstars 3.5.2 and PHD2 2.6.6. I continued to apply the next updates but thit did not help to resolve this issue. Currently I am using the latest Astroberry on a Raspberry Pi 4 with Kstars 3.5.4 and PHD2 2.6.10. All the devices are directly connected to the Rpi4 throught USB. The mount is connected to the RPi4 with a FTDI serial to USB adapter.
I made several tests on different targets using the Ekos scheduler with my EQ6 mount and the the INDI Mount Simulator. The problem occurs only with my EQ6 and the EQmod driver but not with the Mount Simulator, that why I am not sure if the issue is related to Ekos/INDI or PHD2. I attached the Ekos and PHD2 logs with verbose mode enabled. There is an intersting message in the PHD2 logs that says :

16:41:38.674 00.027 2999734288 evsrv: cli 0x1420aa8 request: {"id":283,"jsonrpc":"2.0","method":"dither","params":[2,false,{"pixels":1,"time":5,"timeout":45}]}
16:41:38.674 00.000 2999734288 PhdController::Dither begins
16:41:38.674 00.000 2999734288 dither: size=2.00, dRA=1.36 dDec=-0.42
16:41:38.675 00.001 2999734288 Error thrown from /home/astroberry/DEV/BUILD/phd2/phd2/guider.cpp:831->No mount
16:41:38.675 00.000 2999734288 Error thrown from /home/astroberry/DEV/BUILD/phd2/phd2/myframe.cpp:2034->move lock failed
16:41:38.675 00.000 2999734288 PhdController::Dither pFrame->Dither failed
16:41:38.676 00.001 2999734288 evsrv: cli 0x1420aa8 response: {"jsonrpc":"2.0","error":{"code":1,"message":"Dither error"},"id":283}
16:41:38.756 00.080 2999734288 evsrv: cli 0x1420aa8 request: {"id":284,"jsonrpc":"2.0","method":"set_paused","params":[false]}
16:41:38.756 00.000 2999734288 SetPaused type=0 isPaused=0 exposurePending=1

I searched on the INDI forum and on Google and I did not found anybody else reporting this problem. So maybe I am  doing something wrong or maybe there is a bad setting somewhere in Ekos or the INDI Eqmod driver that is causing this issue. Any help or advice is appreciated.

Cheers,
Sebastien



 

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