Positional Astronomy: 
Introduction

This course is intended to address the following problems:


It is largely based on the following text-books:

There are other good text-books available;  
they should all have Library of Congress classifications around classmark QB145.


Also look at:

Objects in the sky appear to be positioned on the celestial sphere, an indefinite distance away.
A sphere is a three-dimensional object, but its surface is two-dimensional.
Spherical geometry is carried out on the surface of a sphere:
it resembles ordinary (plane) geometry, but it involves new rules and relationships.
 
 

Next section: The Terrestrial Sphere
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