Radio Astronomy, Technology, and the Noisy World

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Radio Astronomy, Technology, and the Noisy World

• Classroom Exercises in
• Radio Frequency Interference

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What is radio astronomy?
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The Radio Sky
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The Optical Sky
Camelopardus
Perseus
Auriga
Taurus
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What emits radio waves?

• Recipe for Radio Waves
• Hot Gases
• Spectral lines
• Electrons and magnetic fields

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Big Point

• Any accelerating charge emits radio waves!

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Big Point 2

• Celestial Objects at Enormous Distances Appear
  dim
• 0.00000000000000000000000001 watt/m2/Hz !!

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The Rest of the Story

• What else emits radio waves?

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The Observatory in Green Bank
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The Rest of the Rest of the Story

• Satellites!

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The GBT

• Why does it look so funny?

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The GBT October, 1999
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