Description
Excerpt from Astronomy With an Opera Glass: A Popular Introduction to the Study of the Starry Heavens With the Simplest of Optical Instruments
Being convinced that whoever will survey the heavens with a good opera-glass will feel repaid many fold for his time and labor, I have undertaken to point out some of the objects most worthy of attention, and some of the means of making acquaintance with the stars.
First, a word about the instrument to be used. Galileo made his famous discoveries with what was, in principle of construction, Simply an opera-glass. This form of telescope was afterward abandoned because very high magnifying pow ers could not be employed with it, and the field of view was restricted. But, on account of its brilliant illumination of objects looked at, and its convenience of form, the opera-glass is still a valuable and, in some respects, unrivaled instrument of observation.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Being convinced that whoever will survey the heavens with a good opera-glass will feel repaid many fold for his time and labor, I have undertaken to point out some of the objects most worthy of attention, and some of the means of making acquaintance with the stars.
First, a word about the instrument to be used. Galileo made his famous discoveries with what was, in principle of construction, Simply an opera-glass. This form of telescope was afterward abandoned because very high magnifying pow ers could not be employed with it, and the field of view was restricted. But, on account of its brilliant illumination of objects looked at, and its convenience of form, the opera-glass is still a valuable and, in some respects, unrivaled instrument of observation.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Details
Publisher - Forgotten Books
Language - English
Hardback
Contributors
Author
Garrett Putman Serviss
Published Date -
ISBN - 9780666004635
Dimensions - 22.9 x 15.2 x 0.9 cm
Page Count - 162
Paperback
Contributors
Author
Garrett Putman Serviss
Published Date -
ISBN - 9781330297971
Dimensions - 22.9 x 15.2 x 0.9 cm
Page Count - 164
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