Alert the diocese. It's a miracle!! After a number of texts back and forth to iOptron support (very responsive, by the way) we were at our wits end. I pulled the main board, just to take a look. Found nothing out of the ordinary, and buttoned it back up. The mount NOW responds to movement requests from the Mac. I'm, again, totally clueless, but hey, it be movin'!!
As an update, I had just installed a new RS232/USB adaptor with the FTDI chipset, but still had connection issues. Now it's OK.
Well, then, I'm moving on to the next steps. My initial intention was to avoid attaching a Stellarmate, or anything similar, to the scope. The idea was to use and extended USB cable, directly connected to the Mac, and then hooked to a USB hub at the scope.
Questions:
Looks like the extended USB cable can be as long as 65 feet or so. Fine for my situation. I'm looking at the Pegasus Ultimate Power Box as a source for both power and USB connections at the scope. I'll have an electrical outlet very close to the scope. However, I've recently seen some not-particularly-favorable-comments about Pegasus and the box. Any comments or suggestions for alternates?
Looks like I'll upgrade my 8 year old Mac for a new one. Any comments on size (21.5" vs 27"), memory, storage, cores, etc? All of the image processing will be done on this computer.
I'd add more questions, but it's time to celebrate my scope connect success with some adult beverages!!
Thanks, again, for your continued assistance!!
Ted

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