Replied by Kaczorek on topic "Can't zoom further due to active limited resources mode"
First of all it is because " limited resources mode" is active, which mean it has been activated n KStars settings (Settings/Configure KStars/FITS)
Second, it is related to limited RAM on raspberry pi.
You can disable the mode, but keep in mind that zooming too much can actually eat all your RAM. It is only 1GB :-/ Te results are pretty much predictable - instant KStars crash