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Here's how we used to do it in the good old days.
Centre a star in the finder with no tracking operational. Time how long it takes the star to reach the edge of the field of view. Double it. Multiply the answer (in minutes) by 15. That is your fov in minutes of arc.
Cheers.
Andrew.
Last edited by alocky; 14-12-2012 at 12:00 PM.
Reason: Stupid predictive text thingo.
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