What is the primary purpose of an astronomical telescope?
A)to magnify and make distant objects appear closer
B)to separate light into its component colors
C)to measure the intensity of light very accurately
D)to access wavelengths that we cannot see visually
E)to collect a lot of light and bring it to a focus

Question

Quizplus · Accepted Answer

The primary purpose of an astronomical telescope is to collect a lot of light and bring it to a focus, allowing for observations of faint and distant objects in space. While telescopes can also magnify objects and analyze light, collecting light is its main function. The primary purpose of an astronomical telescope is to collect as much light as possible so that the image produced is as bright and clear as possible. This is achieved through the use of large mirrors and lenses that gather and focus the light onto a small area. Magnification is a secondary function and is achieved by using eyepieces to enlarge the image. Separating light into its component colors is done by a spectroscope, not a telescope. Measuring the intensity of light is also secondary to the main function of collecting light. Accessing wavelengths that we cannot see visually is done through the use of specialized instruments such as radio telescopes or x-ray telescopes.

What Is the Primary Purpose of an Astronomical Telescope