When the display is in motion, & kstars; must recompute the screen coordinates of every object in its database, which involves some pretty heavy trigonometry. When scrolling the display (either with the arrow keys or by dragging with the mouse), the display may become slow and jerky, because the computer is having trouble keeping up. By excluding many of the objects, the computational load is greatly reduced, which allows for smoother scrolling. You can turn off this feature in the Configure & kstars; window, and you can also configure which objects get hidden
Patiënten met stabiel coronair vaatlijdenKDE40.1 KDE40.1