Question

Answer the following questions:-
Explain with diagram the construction of Newtonian telescope​

Answer 1

Answer:

In late 1668 Isaac Newton built his first reflecting telescope. ... He added to his reflector what is the hallmark of the design of a Newtonian telescope, a secondary diagonally mounted mirror near the primary mirror's focus to reflect the image at a 90° angle to an eyepiece mounted on the side of the telescope.