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List:       kstars-devel
Subject:    Re: Possible bug with exposure timeout in Focus window
From:       Hans <hans () lambermont ! dyndns ! org>
Date:       2024-02-01 18:10:10
Message-ID: Zbvegnf46ooVoYvG () rey ! lambermont ! dyndns ! org
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Hi John,

This has been fixed since :
https://invent.kde.org/education/kstars/-/commit/a3c404394d809b75cefc5e710dce38a851180a16


-- Hans

John Evans wrote on 20240116:
> Hi Patrick,
> 
> Good spot! I think your suggestion to deal with the timeout in the same way as \
> capture is a good idea. 
> Feel free to change it. If you like you can add me as a reviewer on the MR.
> 
> It would probably be worth making the default timeout in Focus the same as Capture \
> (assuming it's a sensible default - I haven't checked). (This is the part of the \
> timeout excluding the exposure). 
> Regards,
> John.
> 
> On 16 Jan 2024, at 18:32, Patrick Molenaar <pr_molenaar@hotmail.com> wrote:
> 
> 
> Hi,
> 
> Last week there was a clear sky and I had some time to put my gear out after months \
> of rain. After setting up my gear I tried to take an exposure for determining the \
> focus. At first the exposure was successful, but it was only about 10 seconds. I \
> had an L-Extreme filter on my Canon camera and no stars were visible. So I tried a \
> longer exposure, about 30 seconds, this time I got an "Exposure failure, Restarting \
> exposure" error message.  Each time I tried the exposure was aborted after about 23 \
> seconds. Only exposures shorter than 20 seconds were successful. In the end I gave \
> up for that night as I was unable to focus my camera. 
> The days after that I connected my camera, tried different cables, different camera \
> settings, but every time when the expose was longer then about 23 seconds, it was \
> cancelled before it was finished. 
> Eventually I started looking in the sourcecode of KStars and found where the \
> exposure was cancelled. I found out that in the options of the focus window, there \
> is an exposure-timeout setting, which was by default set to 30 seconds. When I \
> increased this setting to a higher value, I was able to make longer exposures, but \
> when the exposure time was greater then the exposure timeout setting, the exposure \
> was aborted again. 
> In other locations in the sourcecode of KStars I found that the exposure timeout \
> was added to the exposure time, so the timeout only occurs a given number of \
> seconds after the exposure should have finished. For the exposure timeout in the \
> focus dialog this was not the case. 
> Is this a bug in the software?
> Or was it intended to have a fixed timeout for the focus windows, that aborts the \
> exposure when the exposure time is set to a value longer then the exposure timeout. \
>  If it is a bug, I am aslo willing to make a fix for it; please let me know. As my \
> profession is software designer and I have made a contribution to KStars in the \
> past (Bahtinov Focus Assistant), this shouldn't be that diffucult. 
> Kind regards,
> 
> Patrick Molenaar


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