Hello Hy,

Sorry, I was not clear in my description of what I think is the problem. I (myself) try to follow the purple line to the crosshair and use both knobs for this. So the workflow for me is basically like in the previous version. The movement of the Alt and Az knobs itself is at least close to orthogonal. So with a bit of trial and error I make my way along the purple line using the knobs for Alt and AZ.

With the split into Alt and AZ components in the display that you implemented  my expectation was that I could use this decomposition of the Alt and Az component for the correction. So when I select a star I expected to move only Alt along the yellow line to the edge of the triangle, then only Az along the green line to the crosshair. So only care about one direction at a time. But when moving my Altidude screw on the mount the stars do not move parallel to the yellow line. Same applies to AZ not parallel to the green line.

Wrong expectation that I could move the selected star along the indicated lines, separating the Alt and AZ correction? Do I need to slew back to home before using the hardware knobs as the calculation of the vectors is based on the first position?

Thanks!
Alex

In case this is relevant: I start in the home position and slew 30 degrees east with each step so when I start turning the hardware knobs the mount is rotated by 60 degrees. I could see Polaris from where I set up my mount and start close to the pole. At the moment I use my main scope for the polar alignment(432 mm focal length, camera ASI 533MC). I'm not  striving for extreme precision below an arcminute.

Read More...