1. Radio Astronomy

5. Very Large Array Socorro, NM

6. 40 meter radio telescope

11. How Radio Telescopes Work
Radio telescopes can produce images of objects in space that would have been missed by an optical telescope.

12. Describe how a radio telescope is used to produce “images”.
2.16
Describe how a radio telescope is used to produce “images”.
One or more antennas to collect the incoming radio waves.
A receiver and amplifier to boost the very weak radio signal to a measurable level.
A recorder to keep a record of the signal.

13. Explain the advantages of using radio telescopes
2.16
Explain the advantages of using radio telescopes
Advantages:
They can see parts of the electromagnetic spectrum that other instruments cannot see (ie Radio Waves)
They can see through dust
Example: they can see the other side of the Milky Way
They can see ionized Hydrogen and thus map the Galaxy
They work day or night
They are relatively simple technology

14. Greenbank, West Virginia
NRAO
Greenbank, West Virginia

15. 10 Meter Radio Telescope

16. Navy Radio Telescope

17. GBT

18. Janskies
Minutes

19. Radio Telescope Image of Galaxy M81

20. VLA Image

22. Pulsar Radio Image