I've got a GSO RC10CF.
I uploaded a file to the astrometry site and got these details:
Size: 34.4 x 22.9 arcmin
Radius: 0.344 deg
Pixel scale: 1.35 arcsec/pixel
I'm fairly certain I was using a 0.67 Reducer at the time (it's been a while, for reasons)
Camera is 9 microns.
Here's the astrometry annotated file, if it's accessible:
http://nova.astrometry.net/new_fits_file/1689968