Choosing and Using a Refracting Telescope

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Название: Choosing and Using a Refracting Telescope (Patrick Moore's Practical Astronomy Series)

Автор: Patrick Moor

Издательство: Springer

Год: 2010

Страниц 284

ISBN: 1441964029

Формат: PDF

Размер: 16,3 MB

Язык Английский

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.