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A query related to telecope making

Share practical advice and tips on making your own kit

A query related to telecope making

Postby psklovep » Mon May 10, 2010 1:50 pm

[b]How do you turn a chunk of glass into a telescope mirror, with a surface accurate to a couple millionths of a millimeter ?
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RE: A query related to telecope making

Postby brianb » Mon May 10, 2010 2:56 pm

Carborundum paste and a lot of hard work (to form the basic curve), pitch & jeweler's rouge (to polish the surface), more of same plus some primitive testing equipment, a lot of patience to get the curve accurate. Surfacing with aluminimum requires specialist equipment but silvering can be done at home, and lasts longer than it used to when coal fires were much more prevalent.

Loads of detailed information in any number of "amateur telescope making" books.
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RE: A query related to telecope making

Postby keithmorris » Fri May 21, 2010 9:30 pm

Sky at night magazine did an article on this a while back. They even put it on to the cd on the mags cover. I didn't keep it wish I had then I could have sent it to you. If you get in touch with them I am sure they could let you have a copy.

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Re: A query related to telecope making

Postby Sensationseeker » Mon Mar 18, 2013 6:27 pm

For those who wish to make their own telescope there's the Camden Astronomy and Telescope-making Society (CATS) in North London. E-mail telescopemakers@mulberry.myzen.co.uk for more info.

Making your own is not sound economics but you do it as a hobby and then enjoy your more personal experience with the heavens. Not for the impatient, unless wanting to find a more Zen approach.

Telescope making supplies can be bought from Terry Pearce at Vacuum Coatings Ltd. He also is our consultant tutor at CATS.

Be warned; telescope making can be highly compulsive and many end up getting more involved with ATM than actually using them. Most of our membership buy scopes as well, the best of both worlds :o heresy I hear you say, no just plain indulgence :twisted:
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