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Tracker Tester is a simple BBC BASIC for Windows utility for testing telescope tracking and guiding setups using a laptop computer.

Simply extract the exe file from the zip folder and save it in a sensible place.

Just click the exe file and it will introduce itself, then change to a black screen and ask you for the screen width in millimetres and the distance of the screen from your scope.

The star will appear as a single white pixel at middle left, just in from the edge. Focus your scope on the 'star'.

When you are ready press a key and the star will move across the screen at approximately sidereal rate as seen from the scope. Depending on screen size and distance it should take half an hour to an hour to cross the screen.

To exit the program, press ALT-F4 (the screen will carry a message to remind you of this).

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Tracker tester comes with no warranty of suitability for any purpose whatsoever.

Category: Astrophotography