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What is the physical diameter of the first optical element in the telescope?(a) Optical aperture(b) Field of view(c) Effective focal length(d) Light detectorI got this question in a national level competition.This key question is from Stellar Sensor Design in division Celestial Navigation, Doppler and Altimeter Radars of Avionics

Answer»

Correct choice is (a) Optical aperture

To explain I WOULD say: Each DESIGN of a telescope is characterized by an optical aperture, an effective focal LENGTH, and a field of VIEW. The optical aperture is the physical DIAMETER of the first element in the telescope.



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