Thanks Gary, new firmware loaded and issue resolved. I'll leave that until after the dark sky trip.
I haven't reloaded the comet data, is there a chance you could send me an example comet tle that works and I'll compare it to the one I loaded ?
Been so long since I've been out I didn't realise how much I'd forgotten, good thing I had a practice today
Thanks again for you help.
Regards
Garin