A Manual of Field Astronomy (Classic Reprint) - Couverture souple

Holt, Andrew H.

Couverture souple

ISBN 10 : 1330080696 ISBN 13 : 9781330080696

Editeur : Forgotten Books, 2018

Synopsis

Master practical methods for measuring your way across the night sky. This guide presents field-tested techniques for astronomers working away from the laboratory. It covers how to observe, record, and compute key positions of stars and the sun to determine time, location, and direction.

This edition walks you through step-by-step observations, using common tools like a sextant or a transit. It explains how to gather data, apply corrections, and perform the calculations needed to map the sky to ground coordinates. The focus stays on real-world, hands-on tasks you can perform outdoors.

• How to determine latitude, longitude, and time from celestial observations


• Different methods for azimuth and meridian-related measurements


• Practical procedures for using a sextant or a transit in the field


• How to read charts and interpret data from reference tables

Ideal for readers of field astronomy, surveyors, and serious hobbyists who want reliable, traditional techniques in a clear, usable format.

A propos du livre

Présentation de l'éditeur

If the reason be demanded for the appearance of another book on Field Astronomy when there are abady published several i excellent works on the subject, it may be stated as follows: That although anjr one of them may serve very well as a text A -for a comparatively extended study, the author has been imable i to find one sufficiently concise to fit the short time usually allowed for the work in a civil engineering couree which would still I provide enough of the fundamentals of the subject to enable the reader to make, intelligently, the observations and accompanying computations required in the practice of general engineering and surve3dng. Somethil(g is needed more complete than the usual chapter in books on surveying and less extensive than most texts on field astronomy. This need, which is acknowledged by other teachers to exist, it is hoped to fill; and at the same time it has been attempted to provide a book which will be of service to engineers and surveyors whose practice requires that they occasionally make astronomical observations. To this end the discussion of fimdamentals has been made brief, but it is thought sufficiently thorough for the purpose. Special attention has been given to the matter of measurement of time, because it is believed that this causes more difficulty for students in general than any other part of the subject. In the selection of the methods described for the determination of latitude, azimuth, time, and longitude, care has been taken to choose those which are believed to be most capable of producing results when used with field instruments under ordinary field conditions. Realizing that the determination of azimuth is more frequently required than any other observation, more methods have been given for this than for the other problems. Each observation has been presented essentially as follows: The work of which the observ
(Typographical errors above are due to OCR software and don't occur in the book.)

Détails de l'édition

• Éditeur: Forgotten Books
• Date d'édition: 2018
• Langue: anglais
• ISBN 10: 1330080696
• ISBN 13: 9781330080696
• Reliure: Broché
• Nombre de pages: 144
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