After an update to the TPPA plugin, I started getting an error message I haven't seen before, and I'm not sure what it means.
If you can't read the screenshot, it tells me
"Position angle between points is large [24.26deg] so polar alignment will be inaccurate. This happens when the initial error is too large or if there is flexure in the system.
Basically, that value it gives in degrees is that angle step size I've input for the TPPA points. If I set that value to something small, like 5 degrees, it tells me "Position angle between points is large [~10 degrees] so polar alignment will be inaccurate." If I set the value to something large, like 20 degrees, it tells me "Position angle between points is large [~40 degrees] so polar alignment will be inaccurate."
I thought a larger step size was better, up to a point, but this seems to want a very small angle. Am I misinterpreting what this message means?
FWIW, I'm taking 3 minute exposures at a 910mm focal length and have no star trails so I can only think I'm aligned reasonably well.
