John Hoogerdijk replied to the topic 'iOptron CEM60 Question' in the forum. 3 weeks ago

I have used the PHD2 drift align in the past, but have shifted to using the EKOS polar alignment. It is generally much quicker to use, mostly automated (some issues with captures starting before the mount is stopped - use manual mode), and is accurate. Note that PHD2 recommends that polar alignment should be slightly off to avoid DEC oscillation (not sure what the recommended amount of misalignment is - my CEM60 is about 1.5 arc-minutes off according to PHD2). Overall, it works very well - much preferred over drift alignment. See PHD2 best practices for details.

If you still want to use drift alignment, use EKOS to align first, and then try PHD2 drift - you'll find your mount will be very close, and it will be much quicker.

Regards,

jmh

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 3 weeks ago

I have just tested with the latest nightly build of INDI and KSTARS.

I have a QHY163m and QHY 5L-II mono and there are no major issues or changes since mid-April. Cooling stays within 0.2 C within a minute or two. No issues with downloads or any other camera functionality. I'd like the cooling tightened a bit more, but I can work with it now. After 5 minutes, it more or less stays within 0.1 C with an odd excursion to 0.2 C. The QHY5L-II connects to a remote PHD2 instance using INDI and also work well. It's been stable now for quite some time.

Regards,

jmh

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 2 months ago

I used a ROCK64 SBC with a USB3 hub and could never get it really stable. The USB3 hub connected the camera and a 500GB SSD boot drive. I tried a number of USB3 hubs but experienced issues with all of them. Rather than spend more money on looking for a combination of parts that worked, I went with the NUC. It uses more power, but it much faster and I've not had an issue for 6 months. I also don't use WiFi as it isn't full duplex, 5G attenuates more quickly than 2.4Ghz, and the use case just isn't suited to wireless. Much better to go with 1Gbe wired.

The drivers are another issue. QHY needs to find a good engineer to help with the cooling problem - it shouldn't be that hard to fix. The settings is also an issue, but is not unique to CCDs - I have to manually adjust the guide rates for every session for my CEM60 mount as they are not saved. Perhaps there were some unintended changes when the github repositories were reorganised. Over time, they'll get fixed I'm sure. I do have to say that in general, INDI is much more stable and the usability of EKOS get improving too.

jmh

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 2 months ago

I too have a QHY163 (mono version though) and am using the same version of the SDK you are using with no issues. I would like to see temperature control a little tighter but +/- 0.3 is ok. Other than that, no issues.

Perhaps there are other issues: power, cabling, USB ports, etc. From your sig, I noticed you may be running on an ARM system (RP4, Tinker Board), I've moved from ARM based systems back to an Intel based NUC with much more success and stability. The newer cameras with USB3 are more demanding and push the limits of the ARM based systems.

Regards,

jmh

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 3 months ago

Just read my message again - I know EKOS doesn't control the temperature. Apologies if the implication was otherwise. QHY needs to find an engineer who understand this stuff to fix. Probably won't be dealt with until the world get through COVID-19... stay safe everyone.

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 3 months ago

Regarding cooling, I've had similar results to other with the latest driver release. Cooling is less stable - I've seen +/- 0.4 C variation whereas in the previous release it was close to +/- 0.1 C. I think someone should dust off their control theory textbook(s). Temperature control was solved a long time ago.

jmh

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John Hoogerdijk created a new topic ' Saving guide rate settings' in the forum. 4 months ago

I have an iOptron CEM60 and it appears that the default guide rate is 0.5. Each session I change it to my preference. When you save the driver config, the new guide rates on not saved. I've looked through the XML files and there is no value for the guide rate.

It would be nice if INDI would save the values when I've changed them so I don't need to do this each session.

Thanks,

jmh

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 4 months ago

I just updated to latest Kstars and INDI bits for QHY. With my QHY163m cooling is improved and stabilises within a couple of minutes. When I get some time, I'll try my older QHY9 as well. Also no issues recognising my QHY5L-II-M either.

jmh

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John Hoogerdijk replied to the topic 'Time remaining measures on EKOS Summary Panel' in the forum. 4 months ago

In my configuration, the client connects to the remote system in my obs and does not download anything to the client itself - the frames are downloaded from the camera to the local disk on the remote INDI server. At the end of a job, the time remaining often shows several hours which clearly not correct as the job as completed successfully. Could this be because the client is not downloading anything?

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John Hoogerdijk created a new topic ' Time remaining measures on EKOS Summary Panel' in the forum. 4 months ago

The times below the bottom three dials (time remaining on current exposure, number of exposures completed, and % of job completed) used to show how much time was remaining under each of these. There is still a time there, but I have no idea what it means. I think its a bug, but perhaps there is some significance I'm missing.

Regards,

jmh

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 5 months ago

I thought it might be interesting to try my QHY9S camera as I had problems with earlier driver versions. The behaviour is better in the sense that cools the camera more slowly, but there are still some instabilities that hang the camera. I attached logs - take a look and let me know what you think.

Regards,

jmh

File Attachment:

File Name: log2.zip
File Size: 51 KB


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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 5 months ago

I had noticed the odd temperature changes too - I poked around in the INDI qhy driver code but I find it difficult to understand where temperature control is exercised (is it in QHYCCD::updateTemperature()?). The last time I did any serious coding was before object oriented became a thing... :-)

I wonder is there is temperature control within the QHY driver and potentially within the INDI driver too? That might explain the strange fluctuations.

Regards,

jmh

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John Hoogerdijk replied to the topic 'QHY Driver: Testing required' in the forum. 5 months ago

Hi,

Just saw the the request to test QHY cooling. I updated all the indi bits and ran a test using my QHY163m - log attached.

Regards,

jmh

File Attachment:

File Name: log_2020-01-03.zip
File Size: 18 KB


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