If you want to look through a telescope with your eye, what do you need to install in it, in addition to the main lens or mirror?
AA device called an image-stabilizer, to keep the image from bouncing around too much.
BA computer to process the incoming light signals
CAnother lens called an eyepiece
DA special filter that keeps out gamma-ray light
AA device called an image-stabilizer, to keep the image from bouncing around too much.
BA computer to process the incoming light signals
CAnother lens called an eyepiece
DA special filter that keeps out gamma-ray light