QHY- Crash during autofocus with "inner crop ratio" option and a color camera

[Daniel Lorenzo]

When starting my sequence, app is now crashing after succesful platesolve.

I just discovered it was due to the autofocus option “AF Inner Crop Ratio”.

Tried setting it to 0.75

Setting back to default 1 fixes the issue.

However, instead of crashing, the app should show an error message and/or append to log

[Daniel Lorenzo]

The crash was silent, window just disappearing. No logs entry too.

[Stefan B]

Please attach your log file.
Ideally set the log file to trace, reproduce your issue and then add it to the issue. Furthermore a more in-depth description of your problem would be beneficial. Which camera etc.

Thanks.

[Daniel Lorenzo]

You are right, I’m sorry. For the relevant hardware:

• Camera is a QHY294C
• Focuser is a GCUSB-nStep, attached to the knob of my C11
  http://www.astrogene1000.com/products/gcusb_nstep/gcusb_nstep.htm

I will reproduce the issue and include the logs. Should include more verbose in them? The level is currently INFO.

[Daniel Lorenzo]

I’ve set the logs level to “trace” set the value of “AF Inner Crop Ratio” to 0.75 and restarted the app (would not cause the crash otherwise, I think option is read only at app startup?).

Reproduced the crash and attached the log (above).

To reproduce the problem after the restart to enable my option changes, I went minimal:

1. Connect the camera
2. Connect the autofocus
3. Go to “Imaging” section
4. Go to “Autofocus” tab
5. Launch autofocus
6. Once exposure and debayering is done ..BOOM!

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[Stanley Dimant]

Potentially has to do with debayering, can you reproduce with debayering turned off?

[Daniel Lorenzo]

I’ve putted back the value to 0.75

1. Tested by disabling the option “Debayered HFR”, it still crashed
2. Tested by disabling the option “Debayer Image”, it did not crash and the autofocus started moving to next position

So it is confirming that the debayer operation is causing a problem.

My camera is a QHY294C, on a fresh NINA 1.10 install (3 days old).

I’m connecting using the native driver, not ASCOM.

Fortunately, I don’t absolutely need that feature. I was interested to see if that would give better results since I’m mounted on a C11 Edge HD with Hyperstar and I have substantial vignetting.

[Stefan B]

Hmm yea sub sampling with a bayer matrix will shred the bayer matrix as not the complete data is availabl... That could cause a problem during the debayer process.

[Daniel Lorenzo]

True! with debayer and a value of 0.75, for a usual 2x2 color pixels, it should match half the resolution, something like:
resolutionWidthOrHeight / 2 * 0.75 * 2

Work all coordinates at half resolution then put them at original

[Stefan B]

Set to minor as this is a fringe scenario.

[Javier Villarreal]

Daniel, is it possible you could pass the setup parameters for autofocus in NINA?. I have the same exact equipment, C11 with a Rigel Systems nStep Focuser. i’ll appreciate it very much.

[Paul Garais]

Just want to confirm, that the exact same issue is also present in current nightly build. Tried it last night (18.06.2021/19.06.2021). I am using a QHY268C with the native driver. A inner crop ratio of 0.5 or 1 is working fine, while 0.75 leads to instant crashes.

[Stefan B]

Does this still happen with the latest nightly? There might have been some changes to prevent this.

[Stefan B]

This is most likely fixed by commit 5b138235

If the problem is still reproducable, please reopen.