1. Using Telescopes to Observe Electromagnetic Radiation in Space.

2. This is a telescope:

3. So is this:

4. And this:

5. Even this:

6. What are Telescopes
Telescopes are instruments that collect electromagnetic radiation and bring it into focus.

8. Collects: Visible Light Wavelengths: 350-800 nm
Optical Telescopes
Collects: Visible Light
Wavelengths: nm
Where Located: on Earth and in space

9. What we look at: Stars, Planets, nebula, galaxies
Optical Telescopes
What we look at: Stars, Planets, nebula, galaxies
What information is provided: Distances using light years, Composition of stars

10. Optical Telescope Images

12. Best of Hubble

14. Collects: Radio waves and Microwaves Wavelengths: 1,000 km- 1m
Radio Telescopes
Collects: Radio waves and Microwaves
Wavelengths: 1,000 km- 1m
Where Located: on Earth

15. What we look at: any space in the sky
Radio Telescopes
What we look at: any space in the sky
What information is provided: discovered Pulsars and cosmic background radiation

16. Radio telescope images

17. This is an array of telescopes.

18. Radio telescope data:

19. Spitzer Space telescope
Collects: Infrared
Wavelengths: 3.6 to 160 micrometers
Where Located: Space

20. Spitzer Space Telescope
What we look at: Stars, galaxies
What information is provided: discovered extrasolar planets, youngest star ever found

21. Spitzer Images
Andromeda Galaxy

23. Collects: X-rays Wavelengths: 0.01-10 nm Where Located: Space
Chandra Observatory
Collects: X-rays
Wavelengths: nm
Where Located: Space

24. Chandra Observatory
What we look at: exploded stars, clusters of galaxies, and matter around black holes.
What information is provided: x-rays emitted from hot gasses leaving black holes has been recorded

25. Chandra Images

26. Cygnus X-1, first strong black hole discovered.

27. SNR 0519-69.0 - remains of an exploding star in the Large Magellanic Cloud.

28. Compton and Fermi Gamma-Ray Observatories
Collects: Gamma-rays
Wavelengths: 20 keV to 30 GeV
Where Located: Space

29. Compton and Fermi Gamma-Ray Observatories
What we look at: deep space, Gamma bursts
What information is provided: exploding stars that become black holes as their cores collapse.

33. Video review