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Angular Magnification

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    An observers unaided eye has a resolving power of 120 seconds of arc. Using a telescope of angular magnification of 24, what would be the agnular separation if the same observer used the telescope?

    Simple question, but I get it wrong?
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    Could you tell us
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    Thanks Stonebridge - I've got it now. Just this question is a bit different than the others I've seen ... the subtended by the eye means once seen through a telescope the angle at the objective lens is reduced - I had it the other way around.


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Updated: June 15, 2012
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