# Kstars / Ekos refocus when temperature changes

**URL:** <https://discuss.kde.org/t/kstars-ekos-refocus-when-temperature-changes/31725>\
**Category:** Brainstorm\
**Tags:** kstars\
**Created:** [March 18, 2025, 8:15pm UTC](https://discuss.kde.org/t/kstars-ekos-refocus-when-temperature-changes/31725 "2025-03-18T20:15:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![swizzly](https://discuss-cdn.kde.org/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@swizzly](https://discuss.kde.org/u/swizzly)\
**Post date:** [March 18, 2025, 8:15pm UTC](https://discuss.kde.org/t/kstars-ekos-refocus-when-temperature-changes/31725/1 "2025-03-18T20:15:41Z")

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Hi!  
In Kstars/Ekos the focus has to be readjusted during a night, when the outside temperature changes. It has to be done by checking the option “Force AF” in the focus module.  
It would be really great if this could be made automatically between two captures, if the temperature changes more than a predefined threshold or at every x minutes.  
This feature is available as far as I know in Stellar Mate which is a Kstars fork.  
What do you think?

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**Author:** ![swizzly](https://discuss-cdn.kde.org/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@swizzly](https://discuss.kde.org/u/swizzly)\
**Post date:** [July 29, 2025, 12:29pm UTC](https://discuss.kde.org/t/kstars-ekos-refocus-when-temperature-changes/31725/2 "2025-07-29T12:29:42Z")

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FYI  
I found this feature, it is indeed included in EKOS, but it is somewhat hidden under some settings under the CCD tab “Limits” button…

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**Author:** ![Paul\_Brown](https://discuss-cdn.kde.org/user_avatar/discuss.kde.org/paul_brown/32/37_2.png) [@Paul\_Brown](https://discuss.kde.org/u/Paul_Brown)\
**Post date:** [July 29, 2025, 1:24pm UTC](https://discuss.kde.org/t/kstars-ekos-refocus-when-temperature-changes/31725/3 "2025-07-29T13:24:59Z")

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Well done. This will be useful to others with similar problems.