Telescopes

Question 1

The amount of light a telescope can gather determines the —- of the image it can form and the —- of objects it can detect

Answer 1

Brightness, dimness

Question 2

Light gathering power determined by

Answer 2

A=pir^2

Question 3

Use Lena’s to focus light

Answer 3

Refracting telescope

Question 4

Use mirrors to focus the light

Answer 4

Reflecting telescope

Question 5

Cheaper, lighter, and do not have an aberration of lenses, used more often

Answer 5

Reflectors

Question 6

Direct focus

Answer 6

Prime

Question 7

All over focus

Answer 7

Newtonian

Question 8

Bouncing focus

Answer 8

Cassegrian

Question 9

The bending of light around obstacles

Answer 9

Diffraction

Question 10

1/60 of an acrminute

Answer 10

Arc second

Question 11

Simultaneous observations are made from widely space, telescopes, and sent to a common detector where they are analyzed by computer to form an image

Answer 11

Interferometer

Question 12

Detects, approximately 4% of photons recorded

Answer 12

Photographic film

Question 13

Semi conductor surface that is broken down into millions of picture elements

Answer 13

Charges coupled devices

Question 14

Picture elements

Answer 14

Pixels

Question 15

How many protons recorded

Answer 15

75%

Question 16

Astronomical objects, ready, energy at 

Answer 16

All wavelengths 

Question 17

Stingless absorbed by atmosphere

Answer 17

In in frayed ultraviolet, x-rays and gamma radiation 

Question 18

From ground-based light sources interferes with astronomical observations

Answer 18

Light pollution 

Question 19

The twinkling of astronomical objects due to refraction of light through the atmosphere 

Answer 19

Scintillation

Question 20

Telescopes in orbit

Answer 20

Hubble and James webb