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INDI Library v2.0.6 is Released (02 Feb 2024)

Bi-monthly release with minor bug fixes and improvements

Saving dark frames

  • Posts: 28
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Hi,

I'm having a problem automatically saving dark frames from my QHY5 guider when capturing on the Ekos guider.
it reports:
2017-01-04T10:01:37 Dark frame saved to /home/martin/.local/share/kstars/darks/darkframe_2017-01-04T10:01:37.fits
but on inspection it doesn't exist and keeps on asking me to take a dark frame on every exposure when the dark frame box is ticked.
Trying to save it from the Fits viwer also fails (no error and the file is not saved).
It appears to do the dark frame subtraction.
Dark library validity set to 30 days and temp threshold 5c

Thanks - Martin
7 years 2 months ago #13536

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Replied by Martin Rumsam on topic Saving dark frames

Here's a bit more info from the logs

2017-01-04T10:21:00.287 - DEBG - Guide: "Capturing dark frame..."
2017-01-04T10:21:01.582 - DEBG - fits MIN: 7 - fits MAX: 48 - pixel range: 41 - bin width 0.037037 bin count 1108
2017-01-04T10:21:01.635 - DEBG - FITHistogram: JMIndex 0.829772
2017-01-04T10:21:01.660 - DEBG - Guide: "Dark frame received."
2017-01-04T10:21:01.697 - DEBG - Guide: "Dark frame saved to /home/martin/.local/share/kstars/darks/darkframe_2017-01-04T10:21:01.fits"
2017-01-04T10:21:01.826 - WARN - Audio notification requested, but sound file from notifyrc file was not found, aborting audio notification
2017-01-04T10:22:15.690 - DEBG - Guide: Capturing frame...
2017-01-04T10:22:16.958 - DEBG - Guide: received guide frame.
2017-01-04T10:22:16.959 - DEBG - "Could not open file /home/martin/.local/share/kstars/darks/darkframe_2017-01-03T12:31:43.fits. Error could not open the named file"
2017-01-04T10:22:16.965 - WARN - Audio notification requested, but sound file from notifyrc file was not found, aborting audio notification
2017-01-04T10:22:18.817 - DEBG - Guide: "Capturing dark frame..."
2017-01-04T10:22:20.111 - DEBG - fits MIN: 7 - fits MAX: 45 - pixel range: 38 - bin width 0.034327 bin count 1108
2017-01-04T10:22:20.186 - DEBG - FITHistogram: JMIndex 0.228035
2017-01-04T10:22:20.209 - DEBG - Guide: "Dark frame received."
2017-01-04T10:22:20.246 - DEBG - Guide: "Dark frame saved to /home/martin/.local/share/kstars/darks/darkframe_2017-01-04T10:22:20.fits"
2017-01-04T10:22:20.368 - WARN - Audio notification requested, but sound file from notifyrc file was not found, aborting audio notification

Also seems to be a problem with sound notification :)
7 years 2 months ago #13539

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Replied by Martin Rumsam on topic Saving dark frames

Just had a thought. It seems to work in the CCD simulator. Could it be that it needs a CCD camera with a physical shutter? On the QHY5 it takes a dark (after telling me to cover the CCD and immediately takes the light frame without pausing.

Thanks -Martin
7 years 2 months ago #13659

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Replied by Jasem Mutlaq on topic Saving dark frames

You're not getting sound notifications because you're not running KDE. For the frames, can you check the permission of /home/martin/.local/share/kstars ? It must be 755 and owned by martin:martin. You can run:
sudo chmod 755 /home/martin/.local/share/kstars
sudo chown -R martin:martin /home/martin/.local/share/kstars
7 years 2 months ago #13669

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Replied by Martin Rumsam on topic Saving dark frames

Thanks for the tip. I'll check it out. Strange that it will create dark frames from the simulator though. FYI I'm using an RPi3 at the scope end. Must say it all works great. This is the final small issue that I need to fix.
7 years 2 months ago #13671

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Replied by Martin Rumsam on topic Saving dark frames

Now fixed

There seemed to be a problem with the config of the QHY5 as it worked OK with the CCD simulator and also with a web cam.
Reloaded the default config and saved and now it does save dark frames.

- Martin
7 years 2 months ago #13780

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