Why celestial navigation?
Comments: With modern GPS navigation now omnipresent, why would anyone want to use celestial navigation? Because it’s fun, it teaches some valuable lessons about how celestial bodies can show where you are on the earth’s surface, and it could be a useful backup in case of loss of GPS due to dead batteries or loss of satellites. This book teaches the subject in easy to understand language, and with just the right amount of humor. All you need is a sextant (which can be obtained, used, for less than $100) and a nuatical almanac. Since this book was published some free computer programs have become available that will let you enter the time and the sextant reading and produce an LOP (line of position) eliminating the need for the almanac. You can practice taking sun shots at home on land, even if you can not see the horizon. In a few hours you can become pretty great at it.
