I hope this is the right forum and someone can help me solve an issue I have been struggling with for at least three months. I am trying to venture into astro photography, and cannot get past PHD2 Calibration step. The equipment I use is:
Celestron CGX mount
Celestron 11’’ Edge HD
Celestron 0.7 Focal Reducer
Orion TOAG or Celestron OAG
ZWO ASI 290 MM Mini guiding camera
Canon 6D Mark II for now (but this is not relevant for this issue)
Initially I thought that I have a problem with my mount and it cannot track correctly. A friend came over and we used his equipment on my mount (a refractor with a guiding scope). Here is a screenshot of PHD2 calibration with his equipment:
Then we tried to exchange different pieces of my setup trying to isolate a problem area. We have changed cables, laptops, guiding camera, switched from Orion TOAG to his Celestron OAG (which he used previously successfully on his SCT). No matter what we did, we would always get the same results. Tried default PHD2 setting, recommended settings found in various online posts, called High Point Scientific for a technical advice – same results. Here are some screenshots of “questionable” calibration results:
The scope was aligned using two alignment stars, four calibration stars, and then polar aligned. Once we got a perfect calibration with my friend’s equipment, we changed it to mine keeping the same polar alignment.
Has anyone ever seen this issue with PHD2 and similar equipment? PHD2 has recognized my guiding camera and has a correct pixel size. I entered 1960 as my focal length to account for 0.7 reducer.
Thank you for your help,