Download e-book for kindle: Amateur Telescope Making (The Patrick Moore Practical by Stephen Tonkin

By Stephen Tonkin

ISBN-10: 1852330007

ISBN-13: 9781852330002

This e-book offers an advent to the layout of various telescopes, mounts, and drives compatible for the home-constructor. tasks contain tools that diversity from a shoestring finances to professional units that aren't commercially to be had. The ability point of every undertaking is indicated and recommendation is supplied as to what's brilliant to build, given what's commercially to be had. tricks and counsel are incorporated, in addition to listings of respected mail order assets of fabrics and parts.

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Extra resources for Amateur Telescope Making (The Patrick Moore Practical Astronomy Series)

Example text

This telescope is the finest 6-inch I have ever looked through. With a high-quality Orthoscopic eyepiece, the views are remarkably contrasty and sharp. On nights of steady seeing the Moon presents an astonishing array of minute detail, bringing to mind astronaut Buzz Aldrin's description of a world of "magnificent desolation". Low-contrast details on Mars and Jupiter are revealed with the sort of clarity one seldom sees in instruments substantially larger. Deep-sky views are also rich with detail.

David Chandler's computer program calculated the 18-point suspension system. As suggested by David Kreige's article in issue 35 of the no-longer-published magazine Telescope Making, I mounted one end of the sling through a threaded rod split with a hacksaw blade. From the outside of the mirror box, the split threaded rod's rotation controls sling length. A nut on the inside of the box helps to lock the rod in place. 25 in plywood. The "points" are the vinyl-covered heads of thumbtacks. 2 The primary mirror cell, showing the 18-point suspension and the broomstick sections mentioned in the text "teeter" or balance bars from aluminium scrap.

Shoestring Telescopes unit power finder. 125 in (3 mm) plywood. The Diagonal Holder A 6 in scrap section of the spar tube is the diagonal's stalk holder. A 1 in diameter section of broomstick, approximately 8 in (20 cm) long, serves as a stalk to which the diagonal is attached. One end of the stalk was cut to a 45° surface. 25 in (6 mm) plywood, cut to the diagonal's outline, attaches with a screw and epoxy to the diagonally cut stalk. I drilled holes 120° apart inside the edges of the plywood, which has a polyurethane varnish coating.

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Amateur Telescope Making (The Patrick Moore Practical Astronomy Series) by Stephen Tonkin

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