You are an astronomer who wants to study a faint star in the process of being born, which gives off most of its faint radiation in the infra-red. Which of the following would NOT be a step you would want to take?

(A) heat your telescope, so its delicate optics are not cold
(B) try to have your telescope as high above the layers of water vapor in the Earth's atmosphere as possible
(C) shield your telescope from the radiation given off by your graduate students
(D) isolate your telescope in very cold surroundings
(E) make sure your telescope optics are kept as free of dust as possible