Question

What are the main consideration in the construction of an astronomical telescope and how are they achieve?Why are mirror objectives rather than lens objectives used in modern telescope ? Clarify giving schematic diagram how the problem of partial obstruction of ray of light by the eyepiece and observer is overcome in the improved version of reflection telescope​

Answer 1

Answer:

A telescope having high magnifying power produces apparently a magnified image which enables to see the finer details of the distinct object. Under normal adjustment M = f o f e . Thus, the desirable aim in optical telescope is to make objective lens of large aperture (diameter) and of large focal length.

Explanation:

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