Possible bug with exposure timeout in Focus window

[Jasem Mutlaq]

Yes I found the issue and it's now fixed in GIT:
https://invent.kde.org/education/kstars/-/commit/a3c404394d809b75cefc5e710dce38a851180a16

--
Best Regards,
Jasem Mutlaq



On Wed, Jan 17, 2024 at 1:11 PM Hans <hans at lambermont.dyndns.org> wrote:

> Hi Jasem and Patrick,
>
> I think there's some confusion here. This is what I see is going on :
>
> The 30 second timeout is just the default value in the exposure-timeout
> setting
> in the options of the focus tab. This part is fine.
>
> The question from Patrick is whether this timeout calculation should start
> at
> the beginning or at the end of the exposure.
>
> I think it should start at the end of the exposure, and thus we have a bug
> here
> that Patrick is willing to help fix.
>
> -- Hans Lambermont
>
> Jasem Mutlaq wrote on 20240117:
> > 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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