Download BookThe Telescope (Classic Reprint)

[Ebook.ug7N] The Telescope (Classic Reprint)

[Ebook.ug7N] The Telescope (Classic Reprint)

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Excerpt from The TelescopeThis book is written for the many observers, who use telescopes for study or pleasure and desire more information about their construction and properties. Not being a handbook in two or more thick quartos, it attempts neither exhaustive technicalities nor popular descriptions of great observatories and their work. It deals primarily with principles and their application to such instruments as are likely to come into the possession, or within reach, of students and others for whom the Heavens have a compelling call.Much has been written of telescopes, first and last, but it is for the most part scattered through papers in three or four languages, and quite inaccessible to the ordinary reader. For his benefit the references are, so far as is practicable, to English sources, and dimensions are given, regretfully, in English units. Certain branches of the subject are not here discussed for lack of space or because there is recent literature at hand to which reference can be made. Such topics are telescopes notable chiefly for their dimensions, and photographic apparatus on which special treatises are available.Celestial photography is a branch of astronomy which stands on its own feet, and although many telescopes are successfully used for photography through the help of color screens, the photographic telescope proper and its use belongs to a field somewhat apart, requiring a technique quite its own.It is many years, however, since any book has dealt with the telescope itself, apart from the often repeated accounts of the marvels it discloses. The present volume contains neither pictures of nebulae nor speculations as to the habitibility of the planets; it merely attempts to bring the facts regarding the astronomer's chief instrument of research somewhere within grasp and up to the present time. Collector Grade Publications - Bookshelf 1 - Gun Books Death from Above-The German FG42 Paratroop Rifle $59.95 by Thomas B Dugelby and R Blake Stevens New Expanded Edition 2007 228 pages 278 illustrations Amateur Radio Telescope - my.integritynet.com.au a discussion and detailed electronic design of a possible 10 metre (30 Mhz) amateur radio telescope project to construct at home Mayan Civilization - New World Encyclopedia Many consider Mayan art of their Classic Era (200 to 900 C.E.) to be the most sophisticated and beautiful of the ancient New World. The carvings and stucco reliefs at ... Cygnus (constellation) - Wikipedia Cygnus / s n s / is a northern constellation lying on the plane of the Milky Way deriving its name from the Latinized Greek word for swan. The swan is ... The Journal of Irreproducible Results Bimonthly science humor magazine published since 1955. Sample articles subscription and contact information and the magazine's history. Vintage Component Data Sheets - Junkbox A gatherum of scans of original component data sheets from Miller coils Thordarson transformers and so on. These are the sheets that came wrapped around the coil in ... Demon Seed - Wikipedia Demon Seed is a 1977 American science fictionhorror film starring Julie Christie Fritz Weaver Gerrit Graham Berry Kroeger Lisa Lu and Larry J. Blake. Technology and Science News - ABC News Get the latest science news and technology news read tech reviews and more at ABC News. Twitpic - Share photos and videos on Twitter 2017 Twitpic Inc All Rights Reserved. Home Contact Terms Privacy Connect with EarthLink the award-winning Internet service ... Save on EarthLink's award-winning Internet services for your home: dial-up DSL high-speed cable & more. Plus web hosting & software. Connect with us!
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