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INDI Library v1.8.9 Released (01 Mar 2021)

INDI monthly update. In addition to driver improvements, major code refactoring is in progress by @pawel-soja to modernize and improve INDI aging code.

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Problems with AZ-GTI mount and PHD2

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The 3.26 still has the DEC issue from reading the last update off the CN thread. Downgrade to 3.20 instead and do your testing.
Kstars Mac osx
Incoming soon:
Odroid C4 / Takahashi 130ED / CEM25p / QHY268M / and more...

old:
Odroid C1 running indiserver (kept up-to-date with apt-get update/upgrade)
Megrez72 / HEQ5 pro / QHY5L-II-M (OAG) / Atik 314L+ / Gerd Neumann drawer
6 months 2 weeks ago #60636

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Had a more precise look to the logs, and immediately notice an unexplained variation of the DEC axis position as reported by the motor controller firmware. For instance during the calibration:
[2020-09-23T23:25:15.234 CEST DEBG ];EQMod Mount : "[SCOPE] Current encoders RA=8153754 DE=9502321 "
[2020-09-23T23:25:15.885 CEST DEBG ];EQMod Mount : "[DEBUG] Timed guide North 1250 ms at rate 7.52053  "
[2020-09-23T23:25:15.887 CEST DEBG ];EQMod Mount : "[DEBUG] SetDERate() : rate = 0.5 "
[2020-09-23T23:25:15.887 CEST DEBG ];EQMod Mount : "[MOUNT] SetMotion() : Axis = 2 -- dir=forward mode=slew speedmode=lowspeed "
[2020-09-23T23:25:15.900 CEST DEBG ];EQMod Mount : "[MOUNT] SetSpeed() : Axis = 2 -- period=1329692 "
[2020-09-23T23:25:17.181 CEST DEBG ];EQMod Mount : "[DEBUG] End Timed guide North/South "
[2020-09-23T23:25:17.290 CEST DEBG ];EQMod Mount : "[SCOPE] Current encoders RA=8153804 DE=9502334 "
[2020-09-23T23:25:18.478 CEST DEBG ];EQMod Mount : "[SCOPE] Current encoders RA=8153832 DE=9502332 "
[2020-09-23T23:25:19.455 CEST DEBG ];EQMod Mount : "[SCOPE] Current encoders RA=8153856 DE=9502342 "
[2020-09-23T23:25:19.601 CEST DEBG ];EQMod Mount : "[DEBUG] Timed guide North 1250 ms at rate 7.52053  "
[2020-09-23T23:25:19.604 CEST DEBG ];EQMod Mount : "[DEBUG] SetDERate() : rate = 0.5 "
[2020-09-23T23:25:19.605 CEST DEBG ];EQMod Mount : "[MOUNT] SetMotion() : Axis = 2 -- dir=forward mode=slew speedmode=lowspeed "
[2020-09-23T23:25:19.611 CEST DEBG ];EQMod Mount : "[MOUNT] SetSpeed() : Axis = 2 -- period=1329692 "
[2020-09-23T23:25:20.890 CEST DEBG ];EQMod Mount : "[DEBUG] End Timed guide North/South "
[2020-09-23T23:25:21.533 CEST DEBG ];EQMod Mount : "[SCOPE] Current encoders RA=8153907 DE=9502344 "
[2020-09-23T23:25:22.602 CEST DEBG ];EQMod Mount : "[SCOPE] Current encoders RA=8153934 DE=9502343 "
At the end at the first Timed guide pulse, the DEC axis changes by itself: 9502334, 9502332 then 9502342. Starting from 9502321, the first guide pulse is correct leading to 9502334 (~12-14 steps), then it moves by itself, and the second guide pulse is only 2 steps from 9502342 to 9502344. But 9502344 is almost correct starting from the beginning. Unless another application is moving the mount, I have no explanation. I did not go further, if I understood South guiding works correctly as you reported, I don't know why the firmware makes special corrections on the North axis. I don't own a STM32 dev board to debug the firmware and I suppose their ASCOM driver is closed source. Did you try with the ASCOM eqmod driver ?
It seems they did not solve the issue (or consider this is not a normal usage of the mount) (thanks @Gonzothegreat) What do they mean with 'telescope pointing forwards' ?
An explanation of the existence of these 2 motor firmwares (altaz and eq) may be that the handcontroller is altaz only and always send commands to the motor board as if it was in altaz mode. If the mount is on an eq wedge you then have to change the Dec axis speeds in the motor firmware and that may explain this issue. But not sure.
6 months 2 weeks ago #60640

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Hi everyone
Guys, are we sure the azgti is reporting side of pier correctly?

@OP: (pointing south for now, there maybe different issues crossing the pole to the north) slew east of meridian:
indi_getprop *.TELESCOPE_PIER_SIDE.*

now slew west of meridian:
indi_getprop *.TELESCOPE_PIER_SIDE.*

What's the output of each command?
Cheers and clear skies,
Steve
kubuntu 20.04
700d, eq6, t7m
6 months 2 weeks ago #60647

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Hello everyone.

Last night I tested firmware v3.20 and this solved the problem. But the guiding was not as good as in Windows (I tested too).

It could be an encoders problem? I think I have read in a forum that it should be done, but I'm not sure.

I attach PHD logs from INDI and ASCOM. I can't attach KStars log because it's 48Mb long :-S.

I think that this problem is solved.

Thanks again.
6 months 2 weeks ago #60716
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Good to hear you got the main problem sorted out :)
Kstars Mac osx
Incoming soon:
Odroid C4 / Takahashi 130ED / CEM25p / QHY268M / and more...

old:
Odroid C1 running indiserver (kept up-to-date with apt-get update/upgrade)
Megrez72 / HEQ5 pro / QHY5L-II-M (OAG) / Atik 314L+ / Gerd Neumann drawer
6 months 2 weeks ago #60717

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maybe it is naive, but I just send an email to support in Sky-Watcher. According, the change log in 3.26, it looks like that they added new features and also wanted to improve something for astrophotography in 3.22, then tried to fix some bugs in 3.26, maybe even this bug. Maybe they will pay attention to this problem now... I hope! AZ GTI is a great and unique product on the market with a lot of fans meanwhile.
6 months 2 days ago #61497

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Sky-watcher has always advertised this mount as not being designed for astrophotography, it is a shame they are not spending more time on it.
Kstars Mac osx
Incoming soon:
Odroid C4 / Takahashi 130ED / CEM25p / QHY268M / and more...

old:
Odroid C1 running indiserver (kept up-to-date with apt-get update/upgrade)
Megrez72 / HEQ5 pro / QHY5L-II-M (OAG) / Atik 314L+ / Gerd Neumann drawer
6 months 2 days ago #61503

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Hey, everyone, there's already news here? Guiding over the Astroberry doesn't work for me either. I have similar problems to those described at the beginning. Thank you very much and clear sky
4 months 3 weeks ago #63216

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I have two AZ-GTi's. Love them.
RA guiding is pretty good. DE is often quite bad. But it's still good enough for my AT72EDII.
My rig is not well balanced - need a heavier counterweight (I am using the standard 1 kg).

Using internal guiding.
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi x 2
SW HEQ5
RST-135
Last edit: 4 months 3 weeks ago by maxthebuilder.
4 months 3 weeks ago #63398

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