Hi all, I have been happily using SGP (currently 22.214.171.1244) and plate solving using a verity of scopes and PlatSolve2 for years. Recently I decided to try wide field using a Canon EF 50mm 1.8 II and QHY168C. I captured an image (see attached) and uploaded to astrometry.net which showed a pixel scale of 19.1 arcsec/pixel and size of 26.8 x 17.8 deg. I fed this into All Sky Plate Solver which solved in under 60s and stated a Focal Length of 51mm.
I then configured a new profile in SGP setting the camera scale to 19.1, scope FL to 51mm and aperture to 50mm. I then tested with PlateSolve2 and max regions and it would not solve. When it failed over to a blind solve it did solve and sync.
Using stand alone PlateSolve 2.28 I matched the same image in seconds - see other image attachment.
Is this an issue with the scale of the image I am trying to solve or have I got the settings wrong?
Many thanks in advance for any support you can offer.