Research observatories do NOT use Newtonian reflectors because they
A) cannot be made large enough for modern astronomical work.
B) are inherently lopsided and cannot support heavy research instruments.
C) are more sensitive to atmospheric distortions than are refractors.
D) require two mirrors, whereas the Cassegrain requires only one.

Question

Quizplus · Accepted Answer

Newtonian reflectors are inherently lopsided due to their design, which places the secondary mirror off to the side of the primary optical path. This design can make it challenging to support heavy or complex research instruments, which are often necessary for advanced astronomical work.

Research Observatories Do NOT Use Newtonian Reflectors Because They