Radio astronomers obtain great angular resolution by
A)Observing at the longest wavelength possible
B)Using arrays of radio telescopes
C)Observing objects when they are near the horizon
D)Observing an object with the same telescope for many years

Question

Quizplus · Accepted Answer

Radio astronomers can obtain great angular resolution by using arrays of radio telescopes, which allows for interferometry techniques to be used. Interferometry combines signals from multiple telescopes to create a high-resolution image, which cannot be achieved with a single telescope. Therefore, using arrays of radio telescopes is the best option for achieving great angular resolution.

Radio Astronomers Obtain Great Angular Resolution by