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Hi,<br>
<br>
during recent imaging sessions with KStars/Ekos (running latest
Indi/KStars from git) I got the feeling that the time span between
exposures was shorter than it should be. I kept a close eye on
what's going on particularly between exposures and came away with
the impression that the "Only Start if Guide Deviation <" check
is performed before the first image in the queue (and the first
image after the re-start of an interrupted queue) but ignored for
all subsequent images.<br>
<br>
I spent some time on browsing through one of my logs for evidence. I
think it underpins my belief...<br>
<br>
I've linked the log file that I am referring to here: <a
aria-label="Download Page Link"
href="https://www.sendspace.com/file/qyuwsr" target="_blank"
class="share link moz-txt-link-freetext" id="cpsrc1660691256360">https://www.sendspace.com/file/qyuwsr</a><br>
<br>
I had interrupted a queue for a re-focus because HFR was
deteriorating. I finished focusing at 23:42:25 and the <u>first
capture</u> in the queue (after re-start) was about to be taken
but the guiding deviation check was performed and found 1.865"
exceeding the 0.5" limit thus suspending capture until 23:42:32 when
guiding deviation of 0.46" was lower than the limit. At 23:42:34 the
120s exposure was started. It finished at 23:44:34, saved a second
later. Then there is a 24s pause in the log file. I suppose during
this time FitsViewer displayed the image and calculated HFR.<br>
<br>
Dithering started at 23:44:59 and was completed 10s later at
23:45:09. This time (<u>second capture</u> in the queue after
re-start) no "Only Start if Guide Deviation <" check is
mentioned. Instead, "resuming in 8s" (as set up in "Ekos ->
Capture -> Guiding settle"). After these 8s, at 23:45:17, a focus
check is performed. It finishes at 23:45:22 and the next exposure is
started right away, at 23:45:22. Still no guide deviation check
mentioned.<br>
<br>
I believe (but cannot prove it) that I witnessed several instances
during the night where after dithering had succeeded, the next
exposure was started although guiding deviation was around 2", way
above the limit.<br>
<br>
<br>
--<br>
<br>
Today I did a Simulators session and found the result is the same.
The "Only start if..." check is performed on the first frame but for
all subsequent frames the system "falls back" to "Resuming in x
seconds" and no "Only start if..." check is performed.<br>
<br>
Logfile: <a aria-label="Download Page Link"
href="https://www.sendspace.com/file/n90rb1" target="_blank"
class="share link moz-txt-link-freetext" id="cpsrc1660746747437">https://www.sendspace.com/file/n90rb1</a><br>
<br>
<br>
Maybe someone can have a look into this. Thanks a lot!<br>
<br>
Regards<br>
Alfred
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