The Main Reason for Placing a Telescope and Scientific Equipment

Multiple Choice

The main reason for placing a telescope and scientific equipment into an aircraft to carry out infrared astronomy is to

A) obtain photographs of resolution higher than can be obtained on the ground.
B) avoid stray IR radiation from the warm Earth and its occupants.
C) avoid the absorption of the IR radiation by water vapor.
D) obtain longer observing times on specific sources by moving in the direction of Earth's rotation.