Sometime this summer, my SBIG ST-8300M developed a stuck pixel about 3 quarters up the frame that then produces a hot column to the bottom of the frame. This has been causing some grief when using Autofocus.
AF dark subtraction is enabled, but due to the random nature of the column’s intensity (since it isn’t a true bad column, but the result of hot pixel spilling down) it’s effectiveness is random.
Setting 10 pixel minimum star size helped, but when the column is continuously larger than 10 pix it picks up as a huge HFD reading (again, because the randomness of the columns intensity with dark subtraction, some times the column is broken up and no problem arises).
Is there a way for the HFD to check the geometry of the star and look for circular pattern instead of 1 pixel (or 2 pixel since 2x2 binning is used) wide by X pixels long linear pattern?
Here is some recent logs and AFpacks which may help.
SGP log from the night of 09/14/2016-09/15/2016:
SGP log from the night of 09/15/2016-09/16/2016:
PHD guide logs (did not include the huge phd debug logs):