What is one type of limitation that requires cosmologists to use these telescopes
Answers
Telescopes are always better than eyes. For example, because of the wave nature of the light we can only see the angular size of the Jupiter's width whereas with the help of telescope we can see the Great Red spot of Jupiter. Telescopes can record the observations with cameras. How much ever we draw things that we saw with our eyes, it will never match the observations the camera has saved because it is the fine details. Thus for accurate observations and to share the same to the world Cosmologists use Telescopes.
One of the major drawbacks of the eye that result in cosmologist to see through telescope is the fact that we cannot capture any image on the eye and even we also cannot zoom out from the eye. So the cosmologist has to purchase use telescope so that they can see the outside world.
Telescopes artificial thing which consists of Huge magnification power and they are connected to computer so that the images which can be seen from the telescope can be recorded on the computer itself and this can be zoom in and out to have a clear look at the image.