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The Itty Bitty Telescope and Sidewalk Radio Astronomy

The Itty Bitty Telescope and Sidewalk Radio Astronomy. Sue Ann Heatherly National Radio Astronomy Observatory www.nrao.edu. What is radio astronomy?. Radio Waves are NOT sound!. A light wave is a light wave, no matter how long. Radio Telescope. Optical Telescope.

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The Itty Bitty Telescope and Sidewalk Radio Astronomy

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  1. The Itty Bitty Telescope andSidewalk Radio Astronomy Sue Ann Heatherly National Radio Astronomy Observatory www.nrao.edu

  2. What is radio astronomy?

  3. Radio Waves are NOT sound!

  4. A light wave is a light wave, no matter how long...

  5. Radio Telescope Optical Telescope Nowadays, there are more similarities between optical and radio telescopes than ever before.

  6. Optical and radio astronomy can be done from the ground! Credit: Windows to the Universe, thence to NASA/STSCI/JHU

  7. A Tour of the Radio Sky

  8. Gas Spectra Neon Sodium Hydrogen

  9. Building an Itty Bitty Telescope GBT IBT David Fields with kids in Memphis

  10. RV Kit--$60 from Ebay 12 GHz satellite dish combined with a signal meter becomes a radio telescope!

  11. Constructing the dish

  12. Realigning the mounting sleeve

  13. Mounting Sleeve Schematic

  14. Mounting the Dish

  15. Finishing Up

  16. Detectors produce an audible tone which increases in pitch when you detect radio signals. Most expensive ($99). Has built in battery. Mid-priced ($50), needs a power supply. Cheapie! ($15), needs a power supply.

  17. Making the power supply

  18. Preparing the Coax

  19. Assembling the battery pack

  20. Battery Pack Schematic

  21. Done!Using the IBT

  22. The Sun emits radio waves!

  23. You emit radio waves!

  24. Geostationary satellites ( Can you find 0° dec?)

  25. Trees (the ground, buildings, anything with a temperature) emit radio waves!

  26. Questions?sheather@nrao.edu

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