Year: 2000 Language: english Author: Hewitt Schlereth Genre: Guide Publisher: Sheridan House Edition: 1st ISBN: 1574090585 Format: PDF Quality: eBook Pages count: 128 Description: Despite the proliferation of electronic navigational devices, celestial navigation remains an essential tool for those who do not wish to be caught short when modern technology fails. In this easy-to-use guide, Hewitt Schlereth explains clearly and concisely how to navigate any stretch of sea using only a handheld sextant, a watch, a plotting sheet and a copy of the Nautical Almanac. The basic process is simple: take a sight with a sextant, establish a secondary reference or benchmark sight, compare the two, and plot the results of the comparison on a chart. Celestial Navigation in a Nutshell demonstrates how to take sights by the sun, moon, stars and planets, discussing the advantages and disadvantages of each method. The reader is taken carefully through several examples and situational illustrations, making this a most effective self-teaching guide. Common errors are reviewed and several tips on how to improve accuracy are given.
Contents
Preface Introduction PART I Our Star: Navigation by the Sun Chapter 1 The Big Picture ..................................... 3 Chapter 2 Mirror, Mirror ...................................... 5 Chapter 3 Celestial Navigation in Theory .......................... 9 Chapter 4 Columns of Numbers ................................ 13 Chapter 5 Celestial Navigation in Practice ........................ 23 Chapter 6 More Columns of Numbers ........................... 28 Chapter 7 Plot, Counterplot ................................... 43 Chapter 8 Noon Sight for Latitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Part II: Neighbors: Navigation by the Planets Chapter 9 Identification ...................................... 75 Chapter 10 Venus, Goddess of the Twilight ........................ 77 Chapter 11 The Outer Planets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Chapter 12 The Edge of Night .................................. 86 PART III The Astral Archipelago: Navigation by the Stars Chapter 13 A Handful of Stars .................................. 95 Chapter 14 The Pole Star . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 08 PART IV Luna: Navigation by the Moon Chapter 15 The Moon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Afterword Accuracy ........................................ 126 Index ............................................... 135
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Hewitt Schlereth - Celestial Navigation in a Nutshell.pdf
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Celestial Navigation in a Nutshell
Language: english
Author: Hewitt Schlereth
Genre: Guide
Publisher: Sheridan House
Edition: 1st
ISBN: 1574090585
Format: PDF
Quality: eBook
Pages count: 128
Description: Despite the proliferation of electronic navigational devices, celestial navigation remains an essential tool for those who do not wish to be caught short when modern technology fails. In this easy-to-use guide, Hewitt Schlereth explains clearly and concisely how to navigate any stretch of sea using only a handheld sextant, a watch, a plotting sheet and a copy of the Nautical Almanac. The basic process is simple: take a sight with a sextant, establish a secondary reference or benchmark sight, compare the two, and plot the results of the comparison on a chart.
Celestial Navigation in a Nutshell demonstrates how to take sights by the sun, moon, stars and planets, discussing the advantages and disadvantages of each method. The reader is taken carefully through several examples and situational illustrations, making this a most effective self-teaching guide. Common errors are reviewed and several tips on how to improve accuracy are given.
Contents
PrefaceIntroduction
PART I Our Star: Navigation by the Sun
Chapter 1 The Big Picture ..................................... 3
Chapter 2 Mirror, Mirror ...................................... 5
Chapter 3 Celestial Navigation in Theory .......................... 9
Chapter 4 Columns of Numbers ................................ 13
Chapter 5 Celestial Navigation in Practice ........................ 23
Chapter 6 More Columns of Numbers ........................... 28
Chapter 7 Plot, Counterplot ................................... 43
Chapter 8 Noon Sight for Latitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Part II: Neighbors: Navigation by the Planets
Chapter 9 Identification ...................................... 75
Chapter 10 Venus, Goddess of the Twilight ........................ 77
Chapter 11 The Outer Planets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Chapter 12 The Edge of Night .................................. 86
PART III The Astral Archipelago: Navigation by the Stars
Chapter 13 A Handful of Stars .................................. 95
Chapter 14 The Pole Star . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 08
PART IV Luna: Navigation by the Moon
Chapter 15 The Moon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5
Afterword Accuracy ........................................ 126
Index ............................................... 135
Contents
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