Thread: Optics Help Needed
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Old 19-07-2018, 01:45 AM
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OzEclipse (Joe Cali)
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Join Date: Jun 2012
Location: Young Hilltops LGA, Australia
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Paul,

formula for a simple lens is


[1/OBJECT DISTANCE] + [1/IMAGE DISTANCE] = [1/ FOCAL LENGTH]


Providing you are not changing distance between mirrors, the SCT will conform to this rule.

Cheers

Joe
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