What does the Aggressiveness setting do?
It reduces the amount of correction applied. When the setting is 10, 100% of the error is tracked out. When it is 8, 80% of the error is tracked out. Why would you want to reduce the aggressiveness? If the agressiveness could be set over 100%, the software would overcorrect and the tracking would go unstable; the star would bounce back and forth until it left the guide box. Calibration accuracy is never perfect because of backlash in the mount; decreasing the aggressiveness ensures stable guiding. A lower aggressiveness will also prevent the mount from following small random motions caused by scintillation and wind loads. Generally speaking, reducing the aggressiveness improves the stability of tracking at the expense of response time. Usually a value between 5 and 8 provides the best tracking; you should experiment to see what works best in your setup.
