Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog Project Gutenberg 2016-11-17 Public domain in the USA. 171 Draper, Henry 1837 1882 On the Construction of a Silvered Glass Telescope Fifteen and a half inches in aperture, and its use in celestial photography Produced by Thiers Halliwell, Chris Curnow and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) "On the Construction of a Silvered Glass Telescope" by Henry Draper is a scientific publication written in the mid-19th century. This work provides an in-depth examination of the design and functionality of a silvered glass telescope specifically suited for celestial photography. It presents both the practical aspects of telescope construction and the underlying scientific principles. At the start of the work, Draper outlines the historical context of telescope development and shares his personal journey of creating a larger, improved instrument in America. He details the materials and processes involved in grinding and polishing mirrors, silvering glass, and constructing the telescope's mounting and components. The opening portion sets the stage for an elaborate discussion on the various challenges encountered in this endeavor and how each was systematically addressed through experimentation and innovation. (This is an automatically generated summary.) Reading ease score: 57.4 (10th to 12th grade). Somewhat difficult to read. en Astronomy Astronomical photography Reflecting telescopes QB Text Browsing: Science - Astronomy Browsing: Science - General Category: Science - Physics Category: Engineering & Technology 257563 2025-06-21T10:44:49.239270 text/html 230618 2024-10-23T01:24:22 text/html 2590602 2025-06-21T10:44:56.720253 application/epub+zip 2593843 2025-06-21T10:44:51.348278 application/epub+zip 149903 2025-06-21T10:44:50.297250 application/epub+zip 2680458 2025-06-21T10:45:00.832182 application/x-mobipocket-ebook 2652198 2025-06-21T10:44:55.775207 application/x-mobipocket-ebook 214769 2022-09-24T10:11:55.463512 application/x-mobipocket-ebook 200298 2025-06-21T10:44:48.226241 text/plain; charset=us-ascii 180364 2024-10-23T01:24:22 text/plain; charset=us-ascii 16505 2025-06-21T10:45:01.016198 application/rdf+xml 15662 2025-06-21T10:44:50.402248 image/jpeg 2121 2025-06-21T10:44:50.349230 image/jpeg 2582067 2025-06-21T10:44:49.390262 application/octet-stream application/zip en.wikipedia