Draw a ray diagram of an astronomical telescope in the normal adjustment position. State two drawbacks of this type of telescope

Draw a ray diagram of an astronomical telescope in the normal adjustme

1.	Draw a ray diagram of an astronomical telescope in the normal adjustment position. State two drawbacks of this type of telescope
Answer» Solution :A refractive TYPE astronomical telescope suffers with the following drawbacks : (i) The IMAGE formed has both chromatic as well as SPHERICAL aberration. (ii) It is extremely difficult to design and MAINTAIN the mechanical support of the telescope.

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Draw a ray diagram of an astronomical telescope in the normal adjustment position. State two drawbacks of this type of telescope

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