The "collector", or "light-gathering part" of the telescope is called the _____

Which of these is the very first design for a reflecting telescope?

In general, the bigger the telescope's objective, the better your _____

If the objective is made 10 times wider, how much more light is collected?

The bending of light through a lens is called _____

Photographs allow us to see fainter objects by taking long _____

Telescopes that use mirrors are called _____

When the light comes to a focus, using a refracting telescope, how does the image change?

Which of these is the only refracting "telescope"?

Which of these is a reflecting telescope with a hole in the primary mirror?

Who discovered infrared light, a kind of light invisible to our eyes?

What was Galileo's contribution to the telescope?

What do modern professional-grade optical telescopes use as their objective?

Who invented the telescope?

Which of these is a reflecting telescope mounted on an alt-az mount? One half of binoculars,

Schmidt–Cassegrain

Telescopes that use a glass lens objective are called _____

Which detectors are dozens of times more light-sensitive than film?

The ability to separate two objects that are very close together, is called the _____

What kind of material is used for a radio telescope?