The only thing better would be if it could also drive the stepper motors on a alt-az scope mount or read position from encoders. Point to this (known) star and click, point to that (2nd known) star and click. Bingo - it can now convert any point in the sky with the number of steps needed on the appropriate stepper motor (guess it would also have to know how many steps on the stepper motor it would take to do a 360 in order to calculate the stepper "resolution"). I'd love to be able to drive stepper motors from my powerbook.
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