Populære produkter Choosing and Using a Refracting Telescope by Neil English Nici10Fv

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Product 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 le