By Stephen Tonkin
This publication offers an advent to the layout of various telescopes, mounts, and drives compatible for the home-constructor. initiatives comprise tools that diversity from a shoestring finances to professional units that aren't commercially on hand. The ability point of every venture is indicated and suggestion is equipped as to what's brilliant to build, given what's commercially to be had. tricks and tips are incorporated, in addition to listings of respected mail order assets of fabrics and elements.
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Extra info for Amateur Telescope Making (The Patrick Moore Practical Astronomy Series)
There is also a sense of satisfaction from using simple tools and economical materials to make an instrument capable of viewing reaches of the universe as they appeared millions of years ago. The educational process of making this mirror has fuelled a desire for bigger and better. Judging from the reaction of my friends and family as they stare at deep sky wonders through the eyepiece, Skinflint is an unqualified success. Perhaps others will be inspired by the success of the contributors to this book to craft their own cosmic voyagers for destinations unknown.
Similar attention should be given to the secondary mirror's rim. Some secondary holders leave only the functioning aluminised surface exposed, but if yours does not, carefully go over the partly aluminised edge area that faces the focuser. If the very thought of going near these pristine shiny mirror surfaces with matt-black paint makes you break out in a cold sweat, skip these steps. There is no point in making a nervous wreck out of yourself for the sake of improved baffling! Two remaining sources of stray light lie at either end of the tube.
After cutting it in a mitre block in order to be able to refit the pieces at a right angle, I inserted a prism (from an old pair of binoculars). The prism is epoxied to the head of an M3 bolt. The bolt protrudes through a hole in the tube and, after adjusting the prism by twiddling with the bolt, I fixed the prism in place with liberal amounts of hot-melt glue. I used hot-melt because it was the only adhesive I had to hand apart from a very small amount of epoxy - I was pleasantly surprised that it did not crack the glass!
Amateur Telescope Making (The Patrick Moore Practical Astronomy Series) by Stephen Tonkin