Possible bug with exposure timeout in Focus window

[Jasem Mutlaq]

Hello Patrick,

While this might indeed be an issue. I think 30 seconds for each exposure
is not a solution.

--
Best Regards,
Jasem Mutlaq



On Tue, Jan 16, 2024 at 9:32 PM Patrick Molenaar <pr_molenaar at 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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