Doing some more experiments on the PAA with Kstars 3.5.4 on astroberry. Last night I had some very weird results:
"Polar Alignment Error: 67° 01' 04\". Azimuth: 66° 55' 39\" Altitude: 03° 28' 55\""
I am not claiming my PA was perfect but this seems like a very high reading. I experienced this more than once.
Adding some logs here. I was playing around with the Focal length but even then it seems weird to get such a high error.
The only reason I can imagine is that near the NCP the calculation becomes more sensitive to errors..
Note I am doing manual slew (so not exactly 30 degrees between the three images).
INDI/KStars on Raspberry Pi 4, 4gb
Raspbian Buster with AstroPi3 script configuration
Skywatcher HEQ5 Pro Mount
Canon 600D Camera
Orion SSAG/ASI120mm @280mm Guide Scope
Waveshare Stepper Motor Board - DIY Focuser
Adafruit GPS Module
Generic Bluetooth Joystick.
Startech 7 port powered USB Hub.