How can I tell if my SXV autoguider has an old or new chip?
The first guiders with the new chip were shipped at the beginning of February 2004. No guiders were made between about August 2003 and Feb. 2004 (waiting for chips), so all ‘old chip’ guiders date from mid 2003. If you are still unsure about your guider, remove the two screws at the rear and lift off the barrel. New chips have ‘Issue 3’ PC boards and two wire ended resistors on the circular board that carries the CCD.
