https://bugs.kde.org/show_bug.cgi?id=424360

--- Comment #2 from mountainai...@outlook.com ---
I believe this may be operating as designed.  In the simulator tonight, I was
able to reproduce the issue when I changed the temperature via INDI.  Over the
course of the night, cooling ambient temperatures will cause the camera temp to
drop, invalidating darks in the library.  Starting exposures can also cause the
sensor temp to increase, having a similar effect in the other direction.

There's no getting around matching your dark and light temperatures, but this
is a real inconvenience.  Over 20 minutes I had to put the cover on 7 or 8
times, and my temp threshold was set to 1°C.

I wonder if there could be two settings for the dark library: a tighter
tolerance for the cooled main imaging cam (0.5C, for example) and a looser
setting (3°C, for example) for the uncooled guide cam.  Would that wide range
affect dark frame subtraction too much?

In addition to the above idea, I would recommend allowing users to disable the
auto-close option in the guiding module's "Cover the telescope in order to take
a dark exposure" dialog.  This way, the dark is not automatically taken when
we're distracted in the field and do not put the telescope cover on.  Some kind
of persistent audio alert would be great, too -- to call attention to the issue
in case the user is sleeping, working on another scope, etc.

I think this can be closed unless you think the above ideas have merit.

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