Focal distance (1 Viewer)

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RT-Cat

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"My person-well trained"
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May 30, 2011
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Cold, Cold,Michigan USA
I know the formula for focal distance on a prime focus dish, but can anyone steer me in the direction of info on how to calculate it for an offset dish. Last time I saw one it looked like you needed to know advance calculus to get the answer. Any simple way to figure it out?
 

RT-Cat

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"My person-well trained"
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May 30, 2011
1,657
224
Cold, Cold,Michigan USA
Thanks guys. Both look very useful.
I have info on dish install experience today in the Shack.

RT.
 
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