Anand Narwani created a new topic ' Polar Alignment Help' in the forum. 10 months ago

I am trying to use the polar alignment module with my Stellarvue SVX-102T (714mm FL @ 101.5mm) main scope and QHY183C Camera (2.4um pixels at 5544*3694).  When I polar align, I use the following process:

  1. Setup the tripod and level it.
  2. install the mount on the tripod.
  3. Place my cellphone in the saddle of the mount and use the daytime alignment mode in PS Align Pro.  If you're not familiar with this, the app will display a bullseye and a set of crosshairs.  I move the tripod and adjust the Altitude/Azimuth knobs to center the crosshairs on the bullseye.
  4. I complete the setup by installing my scope, guidescope, camera etc
  5. I run Capture and Solve with the option of "Sync" as this appears to prevent the solver from crashing.  The results are:
    1. Effective FL of 736mm
    2. FOV 62.1' x 41.3'
When run the polar alignment routine I get a polar error of a little more than 1 degree.  The issue I have is that the endpoint of the vector is always off the image no matter where I selected the star.  In order to try to get closer, I repeated the polar alignment process several times trying to get closer.  At one point I had a total polar error of 51', but that was as close as I could get. The red circle would disappear after some time, so I suspect that I kept overshooting the end point.   Help.