The U.S. Naval Observatory: Mission, Products, and Services

The U.S. Naval Observatory: Mission, Products, and Services
    • Languages: English
    • Publish Date: 2012-03-06
    • Skill Level: 1
    • Completion Time: .75 - 1.00 h
    • Includes Audio: yes
    • Required Plugins: Flash
    • Topics:
      Geospatial
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Outcome Objectives
  • List the products and services of the USNO
  • Describe how these products and services are used
  • Describe how the USNO determines precise time
  • Describe how the USNO determines earth orientation
  • Define Astrometry
  • List and describe the astronomical products of the USNO
Enabling Objectives
  • Describe celestial, terrestrial, and GPS reference systems
  • Describe UTC, UT1, GMT and the relationship between them
  • Describe how precise time is used to tie reference systems
  • Describe how an atomic clock works (in general terms)
  • Define Astrometry
  • Describe the information in a star catalog
  • Define and describe VLBI
  • Describe application of VLBI to EOP and plate tectonics
  • List publications of the USNO
  • Describe the contents of the Nautical Almanac, Air Almanac, and Astronomical Almanac