A brief description of the concepts is provided in each box. Many questions utilize charts, diagrams, photographs and data included in the module. In most questions students are expected to reach conclusions based on the figures and data.

Graphic from Module - Click for Large View Observational (ATPI)
Investigation #11 - Horizon System
  • Development of altitude/azimuth using tables and celestial sphere diagrams.
  • Extensive use of celestial sphere diagrams stressing observers view of the sky and altitude/azimuth notation.
  • Geometric development exercise for NCP altitude.
  • Development of the horizon system for various locations on Earth.
  • Practical questions regarding the use of the horizon system at different latitudes and longitudes.
Other Observational Modules:
#6| #7| #8| #9| #12| #13| #14| #15| #20| #22| #23| #24| #25

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