Christopher Kovacs replied to the topic 'Problem connecting to QHYCCD QHY 5L-II-C' in the forum. 4 days ago

I have seen this issue with my QHY5LII-M camera. Typically, I would get an exposure timeout when doing longer exposures. I found that would have to keep the exposure times to less then 2.5 seconds or so. The qhy debug log snippets shows:

DEBUG   3289.065762 sec : Current exposure time is 3000000.000000 us
DEBUG   3289.066544 sec : SetQHYCCDBinMode (1x1).
DEBUG   3289.067187 sec : SetQHYCCDResolution camroix 0 camroiy 0 camroiwidth 1280 camroiheight 960
DEBUG   3289.067769 sec : Taking a 3 seconds frame...
DEBUG   3290.068521 sec : Exposure in progress: Time left 2
DEBUG   3291.072976 sec : Exposure done, downloading image...
DEBUG   3291.074218 sec : Blocking read call.
DEBUG   3292.422826 sec : Blocking read call finished.
DEBUG   3292.423573 sec : Download complete.
DEBUG   3292.426889 sec : Uploading file. Ext: fits, Size: 1232640, sendImage? Yes, saveImage? No
DEBUG   3292.468782 sec : Upload complete
DEBUG   3292.550791 sec : Current exposure time is 3000000.000000 us
DEBUG   3292.551576 sec : SetQHYCCDBinMode (1x1).
DEBUG   3292.552225 sec : SetQHYCCDResolution camroix 0 camroiy 0 camroiwidth 1280 camroiheight 960
DEBUG   3292.552818 sec : Taking a 3 seconds frame...
DEBUG   3293.554357 sec : Exposure in progress: Time left 1
DEBUG   3294.556186 sec : Exposure done, downloading image...
DEBUG   3294.557380 sec : Blocking read call.
The blocking read call never finishes. and you get a timeout error. I've attempted to abort, disconnect and reconnect, and usb disconnect. The only solution I've found is to restart the Indi server and reconnecting. I have tried changing the USB Speed and Traffic settings, but still no joy. If I can find the time, I'll do some specific testing with the vendor's SDK and see if test programs fail.

Many people successfully auto-guiding with this camera, but I've found it unreliable. I have tried using the latest vendor SDK libraries from the vendor without much success and given up on this camera under Linux for the time being.

Hope this helps, good luck.

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Christopher Kovacs replied to the topic 'Frustrated and Need Recommendation for Guider Imager' in the forum. 2 weeks ago

I want to thank everyone who replied. Seems like a common problem with this QHY5 devices. Further investigating, it looks like the ZWO ASI120MM-S (usb3) is the way to go. I like the Lodestar guider, but a little too much money and I would like to save up for the ASI1600MM cooled with filters (or something equivalent). I have been away from the hobby for quite some time. I actually built two Richard Berry's Cook Book Cameras back in day and used them for many years; it's amazing how far things have come.

Cheers,

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Christopher Kovacs created a new topic ' Frustrated and Need Recommendation for Guider Imager' in the forum. 2 weeks ago

Hi All,

I am a bit frustrated. I working on the ultimate goal of using Kstars and Raspberry Pi/Odriod as a client for controlling my equiptment and imaging. I ordered a QHY5L-II-M as a replacement for the old Meade DSI pro. The QHY5 has issues with longer exposures and intermittent exposure reset errors. I have tried several things, but issue is still persists.

I am now looking for another guider camera replacement for the QHY5 as I've given up hope for now on the QHY5L-II-M. I am looking at the ZWO ASI120MM which seems like it would be adequate for a guiding. But before I invest in another ccd/cmos camera for guiding, what are others using here for guiding in the Raspberry/Odroid client configuration? By the way, the guide scope is a small 50mm f/3.2.

Thanks in advance,

Chris

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