I am temporarily back to imaging with my Canon 550D DSLR due to problems with my CCD. When using the CCD, PlateSolve2 worked quickly and solved every time. When I switched to the DSLR on the same target it almost never solves even though I can see the target in the preview, so it’s really close. I have tried setting the FOV parameters in the PlateSolve2 window but it just keeps searching. One time, it solved the first time, adjusted the scope by a very small amount to correct 20 or 40 pixels and then the PS2 failed. Interestingly, astrometry.net failed too.
Tonight I was on the same target, PlateSolve2 failed, as did a local installation of astrometry.net but when I switched the plate solver to Elbrus (which I have a terrible time getting to work), it solved immediately and centered the target just fine.
I’m imaging at 420mm FL so my FOV is about 3x2 deg.