PEC correction: Meade Smart Drive

As the telescope shows a magnified image of any astronomical object, an astronomical mount must be very precise. Even small deviations may interfere with longer exposure time images. But small fluctuations will always be present as the worm shaft, which is part of the drive, can never be absolutely perfect. These periodic fluctuations can be detected and compensated for by the computer control. Smart Drive technology enables this ‘permanent periodic error correction’ (PPEC).