Bill. Many thanks for your reply. I am glad that is sorted out for me.
You are doing a brilliant job.
Guide8 in use with latest MPCorb downloads and the full USNOA2 on my
hard disk makes life so easy at the telescope and also aids immensely
all the follow up work.
With so much data on the PC Guide8 will find and put anything I
select to 22nd magnitude from USNOA2 to within one minute of arc at
the centre of my CCD chip.
Best wishes John. Code J93. Mount Tuffley Observatory. UK.