Bob

I could not find anything in the help about loading the USNO A2.0 catalouge

Apparently it is superseded by USNO B1?

But how do I get the catalouge. I have search a number of sites and no luck? Any guidance would be a great help as I have not used anything else other than GSC

Yes my field is quite small even at F3 with the 20 inch (about 11 x 14 mins). So I guess a better catalogue is needed.

Will the USNO B1.0 or NOMAD internet section work? I guess I do not need to point the path reference to anywhere? Will this slow down the whole process?

Regards
Dave