Astronomy Chapter 3 Telescopes

Refractors

100

Focus light using this

Lenses

200

Used refracting telescope to see moons of Jupiter

Galileo

300

The larger the diameter of the lens the _____ the image.

brighter

400

The lens you look through

Eyepiece

500

The lens that collects light.

Objective lens

Reflectors

100

Focuses light using this

mirrors

200

First scientist to build a reflector

Newton

300

Most modern telescopes are this type

Reflectors

400

This telescope can be built with a larger collecting aperture

Reflectors

500

The greater the magnification the ____ the resolution

lower

Space Telescopes

100

This space telescope has been orbiting for 25 years.

Hubble Space Telescope

200

Space telescopes do not have the problem of atmospheric interference called ____.

Seeing

300

What will happen to Hubble in 2024.

It will crash to earth.

400

What type of orbit do most have?

Geocentric

500

Will replace Hubble.

James Webb Space Telescope

Pot Luck I

100

The biggest steerable radio telescope

Green Bank Observatory

200

How do you determine magnification of a refractor

F_o/F_e

300

Put these in order by size:  radio telescope, refractor, reflector

reflector, refractor, radio

400

Distance from focal point to center of lens

focal length

500

The thicker the objective lens the greater the _____.

magnification

Pot Luck II

100

Because colors of light bend different amounts, refractors have this problem

Chromatic aberration

200

These device turns telescope images to pixels

ccd  Charge coupled device

300

We can change a mirror shape to correct for the atmosphere's bending and distorting light.

Adaptive optics

400

Any object that collects radiation & turns it into an image

Telescope

500

Bending of light as it enters a telescope

Diffraction