Pinpoint setup with smaller image scale

I have a licenced version of PinPoint (App: v5.1.4; Engine: v5.1.8) and I’ve always used the GSC 11 catalog set for up to Mag 20 stars. Normally everything has worked well with my native image scale of 1.12 arcsec/pixel. However, being galaxy season, I’ve added a 2x Powermate to my image train and my image scale is now 0.56 arcsec/pixel with a focal length of 2000mm and a KAF-8300 chip (FOV 23 x 31 arcmin), and I’m getting failures in my plate solving with meridian flips. Is the solution to download USNO A2.0, or is there something else I’m overlooking?

Thanks,
…Keith

Not sure. There are a few variables here… That said, GSC only works well with images that are 15’ across (or larger). Anything smaller will require USNO.

Sounds like my images are a bit larger than the minimum. Maybe I didn’t have the image scale set quite right. I’ll try again and see if I can tweak things to solve properly with the GSC catalogue.
…Keith