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  #17  
Old 06-10-2009, 02:04 AM
Ian Robinson
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Ian Robinson is offline
 
Join Date: Jan 2007
Location: Gateshead
Posts: 2,205
Quote:
Originally Posted by Tandum View Post
These guys make CF astrograph tubes. Get the wallet out

http://www.dreamscopes.com/
I looked at their site the other day .... too expensive.

Plus shipping costs of a completed ready to use CF tube will be horrendous from anywhere overseas , so that's also a deal killer.

I'll see that that mob in Perth quote .

If I buy the cloth on Ebay from the USA, I can get :
2x2 Twill 3K CF cloth 60" wide for 39USD per m + postage
plain 3K CF cloth 60" x 170" for 105USD + postage.


So this looks affordableas a DIYS upgrade if I use 4 layers of plain CF cloth followed by 2 layers of 2x2 Twill CF cloth.
Does that sound like a reasonable contruction for a 315mm OD x 1.253m tube ?
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