The GPS Users Guide To Celestial Navigation

An introduction to the theory and practice of obtaining a position line from sun and star sights, intended for those who use GPS as their primary means of navigation. This book contains a clear explanation of the necessary concepts in 38 pages of text plus apendices, a long term almanac (Sun and selected stars to 2025), a guide to sight reduction forms and a worksheet for use with a scientific calculator. It provides a complete sight reduction system in 6 pages. All that is needed in addition is the calculator, a sextant and a good watch