Author: Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages :
Book Description
Global Trade Perspective 2005 - Binoculars, Monoculars, Optical Telescopes, Astronomical Instruments & Mountings Therefor
Author: Global Trade Perspective 2005 - Parts for Frames & Mountings of Spectacles & Goggles
Author: Global Trade Perspective 2005 - Telescopic Sights for Fitting to Arms; Periscopes; and Telescopic Parts of Electrical, Optical, Photographic, Television
Author: Global Trade Perspective 2005 - Mounted Lenses, Prisms, Mirrors and Other Optically Worked Elements Employed As Parts of Fittings for Instruments
Author: Global Trade Perspective 2005 - Frames and Mountings for Spectacles and Goggles
Author: Choosing and Using a Refracting Telescope
Author: Neil EnglishPublisher: Springer Science & Business Media
ISBN: 1441964037
Category : Science
Languages : en
Pages : 284
Book Description
Choosing and Using a Refracting Telescope has been written for the many amateur astronomers who already own, or are intending to purchase, a refracting telescope – perhaps to complement their existing arsenal of larger reflecting telescopes – or for the specialist who requires a particular refractor for serious astronomical applications or nature studies. Four hundred year ago, during the winter of 1609, a relatively unknown Italian scientist, Galileo Galilei designed a spyglass with two crude lenses and turned it skyward. Since then, refractors have retained their dominance over all types of reflector in studies of the Moon, planets and double stars because of the precision of their optics and lack of a central obstruction in the optical path, which causes diffraction effects in all commercially-made reflectors. Most mature amateur astronomers got started with a 60mm refractor, or something similar. Thirty years ago, there was little choice available to the hobbyist, but in the last decade long focus crown-flint achromats have moved aside for some exquisitely crafted apochromatic designs offered by leading commercial manufacturers. There has been a huge increase in the popularity of these telescopes in the last few years, led by a significant increase in the number of companies (particularly, William Optics, Orion USA, StellarVue, SkyWatcher and AstroTech) who are now heavily marketing refractors in the amateur astronomical magazines. In Choosing and Using a Refracting Telescope, well-known observer and astronomy writer Neil English celebrates the remarkable history and evolution of the refracting telescope and looks in detail at the instruments, their development and their use. A major feature of this book is the way it compares not only different classes of refractor, but also telescopes of each class that are sold by various commercial manufacturers. The author is perhaps uniquely placed to do this, having used and tested literally hundreds of different refracting telescopes over three decades. Because it includes many diverse subjects such as imaging with consumer-level digital cameras, imaging with webcams, and imaging with astronomical CCD cameras – that are not covered together in equal depth in any other single volume – Choosing and Using a Refracting Telescope could become the ‘refractor bible’ for amateur astronomers at all levels, especially those who are interested in imaging astronomical objects of every class.
Importers Manual USA
Author: Edward G. HinkelmanPublisher: World Trade Press
ISBN: 9781885073938
Category : Business & Economics
Languages : en
Pages : 970
Book Description
The manual is highly organized for ease of use and divided into the following major sections: - Commodity Index (how-to import data for each of the 99 Chapters of the U.S. Harmonized Tariff Schedule)- U.S. Customs Entry and Clearance- U.S. Import Documentation- International Banking and Payments (Letters of Credit)- Legal Considerations of Importing- Packing, Shipping & Insurance- Ocean Shipping Container Illustrations and Specifications- 72 Infolists for Importers
Care of Astronomical Telescopes and Accessories
Author: M. Barlow PepinPublisher: Springer Science & Business Media
ISBN: 1846280710
Category : Science
Languages : en
Pages : 256
Book Description
Commercially-made astronomical telescopes are better and less expensive than ever before, and their optical and mechanical performance can be superb. When a good-quality telescope fails to perform as well as it might, the reason is quite probably that it needs a little care and attention! Here is a complete guide for anyone who wants to understand more than just the basics of astronomical telescopes and accessories, and how to maintain them in the peak of condition. The latest on safely adjusting, cleaning, and maintaining your equipment is combined with thoroughly updated methods from the old masters. Here, too, are details of choosing new and used optics and accessories, along with enhancements you can make to extend their versatility and useful lifetime. This book is for you. Really. Looking after an astronomical telescope isn’t only for the experts - although there are some things that only an expert should attempt - and every serious amateur astronomer will find invaluable information here, gleaned from Barlow Pepin's many years’ experience working with optical instruments.
The History of the Telescope
Author: Henry C. KingPublisher: Courier Corporation
ISBN: 9780486432656
Category : Science
Languages : en
Pages : 484
Book Description
This remarkable history encompasses not only the achievements of the early inventors and astronomers but also the less frequently recounted stories of the instrument makers and of the actual instruments. A model of unsurpassed, comprehensive scholarship, this volume covers many fields, including professional and amateur astronomy. 196 black-and-white illustrations.
A Buyer's and User's Guide to Astronomical Telescopes & Binoculars
Author: James MullaneyPublisher: Springer
ISBN: 9781846284397
Category : Science
Languages : en
Pages : 204
Book Description
Both beginning/novice amateur astronomers (at the level of Astronomy and Night Sky magazine readers), as well as more advanced amateur astronomers (level of Sky and Telescope) will find this book invaluable and fascinating. It includes detailed up-to-date information on sources, selection and use of virtually every major type, brand and model of such instruments on today’s market. The book also includes details on the latest released telescope lines, e.g. the 10-, 12-, 14- and 16-inch aperture models of the Meade LX-R series. As a former editor for Sky & Telescope, Astronomy, and Star & Sky magazines, the author is the ideal person to write this book.