What is necessary to use on a telescope in order to photograph solar flares and solar prominences?
A B C D
a light filter a chronograph an electric drive a series of mirrors
Question: What is necessary to use on a telescope in order to photograph solar flares and solar prominences?
(A) a light filter
(B) a chronograph
(C) an electric drive
(D) a series of mirrors

Answer: (A) a light filter
Answer: (B) a chronograph
Question: What is necessary to use on a telescope in order to photograph solar flares and solar prominences?
(A) a light filter
(B) a chronograph
(C) an electric drive
(D) a series of mirrors
Answer: (A) a light filter