No matter what it says on the box regarding magnification of the telescope it is rarely true because it's not usable at those numbers.

The primary job of a telescope is to gather_________.

A telescope is like a big________.

This person from Holland invented the first telescope in 1608.

____________ was the first person to use the telescope in astronomy.

True or False Galileo used a refractor telescope.

Refracting telescopes use ___________.

Before the light goes up to the eyepiece it has to go through a ______________.

______________developed the reflector about 1680, in response to the chromatic aberration (rainbow halo) problem that plagued refractors during his time.

Reflector telescopes use _________ instead of ___________.

In the refractor telescope you're looking at the eyepiece at the other end of the telescope but with the reflector telescope the eyepiece is toward the __________ of the telescope.

____________ telescope is a combination of lenses and mirrors.

Catadioptric telescopes use a __________path optical system and thus can be shorter than their focal length would imply. They are lighter and more compact when compared to telescopes of the same aperture, as is the mount that holds them.

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