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List: kstars-devel
Subject: Re: Possible bug with exposure timeout in Focus window
From: Jasem Mutlaq <mutlaqja () ikarustech ! com>
Date: 2024-01-17 4:33:25
Message-ID: CAE0bU5mQEh8DJqMThtXgcP_gzxCAD18kdgtYqwAeP_4gt8rdvQ () mail ! gmail ! com
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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@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
>
[Attachment #3 (text/html)]
<div dir="ltr">Hello Patrick,<div><br></div><div>While this might indeed be an issue. \
I think 30 seconds for each exposure is not a solution.</div><div><br \
clear="all"><div><div dir="ltr" class="gmail_signature" \
data-smartmail="gmail_signature"><div dir="ltr"><div><div \
dir="ltr"><div>--</div><div>Best Regards,<br>Jasem \
Mutlaq<br></div><div><br></div></div></div></div></div></div><br></div></div><br><div \
class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 16, 2024 at \
9:32 PM Patrick Molenaar <<a \
href="mailto:pr_molenaar@hotmail.com">pr_molenaar@hotmail.com</a>> \
wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div \
class="msg5212674042552428115">
<div dir="ltr">
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">Hi,</span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt"><br>
</span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">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. </span></div> <div \
style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)"> <span \
style="font-size:11pt">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.</span></div> <div \
style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)"> <span \
style="font-size:11pt"><br> </span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">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.</span></div> \
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)"> \
<span style="font-size:11pt"><br> </span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">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.</span></div> <div \
style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)"> <span \
style="font-size:11pt"><br> </span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">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.</span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt"><br>
</span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">Is this a bug in the software?</span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">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.</span></div> <div \
style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)"> <span \
style="font-size:11pt"><br> </span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">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.</span></div> <div \
style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)"> <span \
style="font-size:11pt"><br> </span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">Kind regards,</span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt"><br>
</span></div>
<div style="font-family:Verdana,Geneva,sans-serif;font-size:10pt;color:rgb(0,0,0)">
<span style="font-size:11pt">Patrick Molenaar<br>
</span></div>
</div>
</div></blockquote></div>
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