By Stephen Tonkin

This e-book offers an advent to the layout of a number of telescopes, mounts, and drives appropriate for the home-constructor. initiatives comprise tools that variety from a shoestring finances to professional units that aren't commercially to be had. The ability point of every venture is indicated and recommendation is equipped as to what's good to build, given what's commercially to be had. tricks and tips are incorporated, in addition to listings of respected mail order resources of fabrics and elements.

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Additional info for Amateur Telescope Making (The Patrick Moore Practical Astronomy Series)

Example text

The lens therefore projects the image of the pinhole at infinity. The finder is used with both eyes open, one eye looking into the lens, the other looking at the sky. The observer's brain superimposes the image of one eye upon that of the other and the visual effect is that a red dot is placed on the sky. Some experimentation will probably be necessary to obtain a suitable pinhole. The method I have found to be most satisfactory is to place the foil on a metal surface and to use a very fine needle.

Part II Specialised Telescopes Gary Seronik The reflector is much maligned as an instrument for lunar and planetary observing, but this 6 in (15 cm) f/9 Newtonian successfully uses every possible trick to increase contrast and improve image quality. This project typifies the way that ATMs adapt common techniques learned from earlier work in order to attain their aims in constructing a non-standard instrument. Most telescope makers I know are on some kind of quest. They shape glass, trace rays, and formulate equations, all in search of an optical ideal that might never achieve solid form.

Part II Specialised Telescopes Gary Seronik The reflector is much maligned as an instrument for lunar and planetary observing, but this 6 in (15 cm) f/9 Newtonian successfully uses every possible trick to increase contrast and improve image quality. This project typifies the way that ATMs adapt common techniques learned from earlier work in order to attain their aims in constructing a non-standard instrument. Most telescope makers I know are on some kind of quest. They shape glass, trace rays, and formulate equations, all in search of an optical ideal that might never achieve solid form.

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