Bluetooth adapter is not a problem, see below (one of possibilities)
http://www.ebay.com/itm/RS232-Blueto...Y7YcgodbqSUZBA
or
http://www.ebay.com/itm/1pc-HC-05-6-...cAAOSwUdlWgp~~
Serial port goes into mount (via shoestring or whatever).
However, I found out that BT adapter for Arduino (above) may have some issues - it presents itself to the system as tw oports, one for TX, another for RX.. which is not right.
But it works as link for OnStep and SkySafari according to others.
Sky Safari runs on android.. buy it is not free.
Unfortunately, CdC doesn't, and Stellarium (which does) doesn't have scope interface.