Things to Know Before Workshop

• Basic night sky coordinates:
  Time Zones (ALFALFA blog)
  The Celestial Sphere
  Coordinate Systems
  Sidereal Time
  Alternate site with more text on Coordinates and Time Zones (See Celestial Sphere and Time and Coordinates sections)
  
  
• Basic properties of galaxies and how they are measured.
  A Galaxy Primer
  Cornell Astro 201 FAQ about galaxies


• Hubble's Law and Structure of the Universe
  Atlas of the Universe
  Hubble's Law
  Universe in a Box
  
  
• Background information about Radio Astronomy
  NRAO Radio Astronomy Topics:
  • What is Radio Astronomy?
  • What are Radio Telescopes?
  • What are Radio Waves?
  • Radio Frequency Interference
  
  Introduction to Arecibo Observatory Lecture by Martha Haynes (large file - may be slow to download over slow connections)

Radio Astronomy, Arecibo, and using ALFA for ALFALFA


• The 21 cm line and its importance to astronomy.
  The 21-cm Line: The Physics (ALFALFA Blog)
  The 21-cm Line: Why Observe It? (ALFALFA Blog)
  ALFALFA and HI in Galaxies


• The Sloan Digital Sky Survey (SDSS)
  Introduction to the SDSS survey
  Video Introduction to the SDSS
  SDSS Galaxy Tutorials
  

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