Please forgive me if I'm the last on the planet to hear about this, but it appears that those of you with Vixen Super Polaris or Great Polaris mounts can add satellite tracking capability for about $1000 US, with the Sky Sensor 2000. For a review, see Paul Laughton's Web Page at: http://www.laughton.com/paul/rfo/ss2000/mir1.html Cheers, Dan Laszlo djlaszlo@aol.com