1. Goal of all telescopes:
TO BRING AS MUCH RADIATION AS POSSIBLE TO A FOCUS

2. Types of Telescopes Named because these telescopes bend light.
Refracting Telescope
Refracting Telescope
Named because these telescopes bend light.
Uses lenses to focus light
Invented 1st: around 1600.
The largest practical lens size in a refracting telescope is around 1 meter
This limits size and light gathering ability
Lens sagging

3. Types of Telescopes Majority of telescopes used Reflecting Telescope
Named because light is bounced off mirrors
Robert Hooke built the 1st working model
Uses mirrors to focus light.
Single mirror
Combination of many mirrors
Can be much larger then refracting telescopes
Majority of telescopes used

4. Telescopes Found away from cities
Lights affect image clarity
High Locations
Less atmosphere to distort images
Used in all wavelengths to find out about the universe

5. Radio Telescope Radio Wave Telescopes look like huge satellite dishes
Radio Wave Collection
Interferometry
Radio Wave Telescopes look like huge satellite dishes
Radio Waves are converted into electrical signals and then stored on a computer.
Linking separate telescopes together so that they act as one telescope.

6. How did we learn about the Moon?
3 Ways
1). Telescopes
2). Probes
3). Human exploration

7. Moon Our knowledge comes from space probes and human expedition
History: Space race between the Soviet Union and the United States.
1957: Sputnik Launched
1961: 1st man in space
1961: Project Mercury
1st U.S. man in space
1962: Project Gemini
2 person crews
1969: Moon Landing
Apollo 11
Neil Armstrong and Buzz Aldrin landed on the Moon

8. Unique Lunar Properties
Earth’s Moon
One of the largest moons
Largest of the inner planets moons
Orbits farther away from its planet

9. Lunar Surface Characteristics
Surface of the Moon is very dark
Low Albedo
Reflects little sunlight
Lunar surface varies greatly in temperature
No atmosphere
Very Hot or Very Cold