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ASTRONOMICAL TOOLS

1
telescope
• device that makes
distant objects appear
to be closer

2
Reflecting telescope - uses an
arrangement of mirrors to form an
image.
Refracting telescope - uses lenses
to form an image.
Cat dioptrictelescope - uses mirrors
combined with lenses to form an image
3
Refracting Telescope

4
Reflecting telescope
1st Built by Isaac Newton

Refracting Telescope

5
Radio telescopes are directional radio antennas
used for radio astronomy. The dishes are sometimes
constructed of a conductive wire mesh whose
openings are smaller than the wavelength being
observed.

6

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Space telescopes

  • 2. telescope • device that makes distant objects appear to be closer 2
  • 3. Reflecting telescope - uses an arrangement of mirrors to form an image. Refracting telescope - uses lenses to form an image. Cat dioptrictelescope - uses mirrors combined with lenses to form an image 3
  • 5. Reflecting telescope 1st Built by Isaac Newton Refracting Telescope 5
  • 6. Radio telescopes are directional radio antennas used for radio astronomy. The dishes are sometimes constructed of a conductive wire mesh whose openings are smaller than the wavelength being observed. 6
  • 7. SPACE TELESCOPES are placed above the atmosphere that can receive much sharper images. These can receive infra-red, ultra-violet and X-ray energy that cannot be received on Earth because of the atmosphere. Einstein Observatory (HEAO-2) was the first fully imaging X-ray telescope put into space FERMI GAMMA-RAY SPACE TELESCOPE (FGST[1]), formerly called the Gamma-ray Large Area Space Telescope (GLAST), is a space observatory being used to perform gamma-ray astronomy 7 observations from low EARTH ORBIT
  • 8. 8
  • 10. • reflecting telescope • diameter of mirror = 2.4 m • space based 10
  • 11. • HST was launched in 1990 from the Space Shuttle and orbits approximately 600 km above the Earth's surface. • Costing over $1.5 billion, it is the most expensive scientific instrument ever built. • A later repair mission with the Space Shuttle put a correcting lens on HST to improve its "eyesight" and it now produces stunning images of unrivaled quality. Hubble Space Telescope orbiting the Earth Astronauts have repaired and upgraded the Hubble Space Telescope on several 11 occasions.
  • 12. Pictures from the Hubble Space Telescope 12
  • 13. 13
  • 14. 14
  • 15. 15
  • 16. • launched in 2003 • infrared images 16
  • 17. collect & focus electromagnetic radiation Optical (visible light) refracting convex lenses radio x-ray radio waves reflecting mirror 17 radio telescope
  • 18. OBSERVATORY • bldg that contains 1 or more telescopes. • It is built high up on mountain tops where it is above most of the pollution, dust and waste vapour in the atmosphere. 18
  • 19. Most large observatories are built on top of mountains. Mauna Kea Observatory 19
  • 20. Mauna Kea Observatory sits near the 14,000 ft. summit of an extinct volcano in Hawaii. It experiences some of the driest air and best seeing in the world. NASA Kids video-Mauna Kea Observatory 20
  • 21. ROCKET is a spacecraft that obtains thrust from a rocket engine. It lifts satellites, space probes and astronauts. A rocket propelled upwards by hot exhaust gases streaming from nozzles at the tail. Saturn V Moon rocket is the tallest, heaviest and the most powerful rocket. 21
  • 22. SPACESHUTTLE design to lift off with the aid of massive booster rocket. But when it returns from space, it lands like an aircraft. 22
  • 23. SPACE PROBES FLY-BYS are space probes lifted into space by rockets, which are computer-controlled robots packed with scientific instruments. It sent to fly by a planet or even orbit around it, sending data and images back to the earth. After they have completed their planned missions, some probes continue on into space. LANDER is a spacecraft which descends toward and comes to rest on the surface of an astronomical body. It is first a re-entry vehicle. 23
  • 24. ROVER (or sometimes planetary rover) is a space exploration vehicle designed to move across the surface of a planet or other celestial body. Some rovers have been designed to transport members of a human spaceflight crew; others have been partially or fully autonomous robots. Rovers usually arrive at the planetary surface on a lander-style spacecraft. 24
  • 25. Date Nov 1957 Space Craft 3, Sputnik 2 Astronomer / Animal LAIKA, a Russian dog that was the first living creature in space. Laika died in space Aug 1960 Koralb – Sputnik BELKA and STRELKA, 2 Russian 2 dogs that were the fiert creatures to return to Earth after orbiting it for 24 hours. April 1961 Vostok 1 YURI GAGARIN is the world’s first spaceman who was a Russian. 1962 Mercury Capsule Space JOHN GLENN, an American who first to orbit the Earth. 1971 Apollo 14 ALAN AHEPARD played golf on the moon. 25
  • 26. Chandra X-Ray Observatory • space based (above Earth) NASA Kids video-Chandra Observatory 26