Telescopes

When the light comes to a focus, using a refracting telescope, it is _____

• right-side up

• upside-down, and flipped left and right

• only flipped left and right

• inverted but not flipped

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

• objective

• aperture

• eyepiece

• focuser

According to Phil, "the problem with astronomers" is getting them to _____

• stop talking about astronomy

• focus more on physics

• increase their funding

• join public outreach programs

This instrument can be thought of as a large light bucket.

• a telescope

• a microscope

• a camera

• a binocular

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

• clarity

• resolution

• definition

• contrast

The bending of light through a lens is called _____

• reflection

• refraction

• diffraction

• dispersion

The image, observed in a telescope, is _____

• smaller than the object

• the same size as the object

• bigger than the object

• invisible

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

• clarity

• brightness

• resolution

• magnification

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

• lenses

• mirrors

• electronic detectors

• photographic film

What kind of detector is used for radio waves?

• a refracting telescope

• a metal dish

• a reflecting telescope

• a digital camera