NINA - blank frames during autofocus [Deep Sky] Acquisition techniques · Tony Gondola · ... · 8 · 119 · 0

Gondola 8.11
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Had a weird thing happen last night. I was running a QHY5iii715C camera and everything was per normal until I tried an autofocus run. All of the autofocus frames where blank/ pure white. I've never seen that before so I'm wondering what the cause might be. I was running HocusFocus and checked everything I could think of in NINA to no avail. I'm wondering if anyone else has seen this issue and what you did to fix it.
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bigCatAstro 0.00
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Tony Gondola:
Had a weird thing happen last night. I was running a QHY5iii715C camera and everything was per normal until I tried an autofocus run. All of the autofocus frames were blank/ pure white. I've never seen that before so I'm wondering what the cause might be. I was running HocusFocus and checked everything I could think of in NINA to no avail. I'm wondering if anyone else has seen this issue and what you did to fix it.

I’ve had this happen a couple times, one was atmospheric and the other hardware. I’ve had a cloud pass through the frame and it caused the sub to be white/green and I’ve had my usb cable for my camera go bad and produce black or white frames.  The usb cable issue was resolved when I replaced it.
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Gondola 8.11
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Well, there weren't any clouds and I don't think it was the cable because I didn't have any problems with imaging both before and after trying the autofocus run. In fact, other than that, the night was flawless. I repeated the process a few times with the same result. I thought it might be a camera gain setting somewhere because I change my cameras around often but I couldn't find anything.
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bigCatAstro 0.00
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Tony Gondola:
Well, there weren't any clouds and I don't think it was the cable because I didn't have any problems with imaging both before and after trying the autofocus run. In fact, other than that, the night was flawless. I repeated the process a few times with the same result. I thought it might be a camera gain setting somewhere because I change my cameras around often but I couldn't find anything.

Interesting, so you were able to repeat the issue in a non-imaging session?  Have you uninstalled and reinstalled the ASCOM driver for the camera?
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Gondola 8.11
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Tony Gondola:
Well, there weren't any clouds and I don't think it was the cable because I didn't have any problems with imaging both before and after trying the autofocus run. In fact, other than that, the night was flawless. I repeated the process a few times with the same result. I thought it might be a camera gain setting somewhere because I change my cameras around often but I couldn't find anything.

Interesting, so you were able to repeat the issue in a non-imaging session?  Have you uninstalled and reinstalled the ASCOM driver for the camera?

I was able to repeat the issue during the imaging session. I've not messed with the drivers yet but that will be the next thing.
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WhooptieDo 10.40
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Autofocus has its own gain settings.     I'd just double check there first.
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Gondola 8.11
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That was the first thing I looked at and it gives exp. time which was normal, nothing about gain though, I don't use filter offsets. If it happens again I'll check min and max to see if there's even any data there.
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Gondola 8.11
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Well, it worked fine last night so who knows what caused it. Just one of those intermittent software hiccups that are all to common.
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bigCatAstro 0.00
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Tony Gondola:
Well, it worked fine last night so who knows what caused it. Just one of those intermittent software hiccups that are all to common.

Glad to hear things went well.  A strange hiccup no doubt.
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