I'm trying to set up SGP for the first time to auto focus.
I've read through the documentation and created a step size using the method described several times and keep coming up with the around the same step size (450-500). That seems like a huge step size compared to what others use.
When I run autofocus, I do get a "U" curve however the final focus is off when compared to a Bahtinov mask. I have to adjust the current position by 200-300 points to get focus perfect with the Bahtinov mask. Prior to using the mask the HFR is aroud 1.2 After using the mask it's around .8 They vary slightly with each image I take.
Equipment
- SGP 2.5.1.17
- CGEM with StarSense
- WO Star 71
- QHY23
- RigelSys Focuser using nStep
Settings
- Bin: 2x2
- AutoFocus Data Points: 9
- Step Size: 450 (If I make this number lower it becomes more of a backwards "J" graph)
- Minimum start Diameter at 1x1 (px): 2 (tried several settings with no difference)
Any suggestions on how to improve my focus?
