Re: [ATM] New 16" ultralight telescope

["Alan Scott" <alanne1956@hotmail.com>]

First off, wire spiders are EASY.  All you need is drill bits, drill press 
(or a drill and a GOOD eye), and scrap wood to make a jig.  Oh - and, don't 
forget about $2-$5 in parts.  I love them, and especially love the minor 
defraction spikes.  The new one is also SOLID.  It is the most solid spider 
that I have ever seen.

Boy, that is a hard question.  I decided it wouldnt', then on the way to 
work, decided it probably would work.  You will have two of the wires going 
one way, one the other.  Otherwise, when you columate, the center shaft will 
just rotate and move up and down.

I DID make a 3 vane spider for DS-3.  There is more detail on what I did 
there, but that one is a bear to columate - the whole system rotates!

alan

>From: NGC704@aol.com
>To: atm@atmlist.net
>Subject: Re: [ATM] New 16" ultralight telescope
>Date: Tue, 18 Apr 2006 09:58:06 EDT
>
>
>In a message dated 4/18/2006 2:08:04 A.M. Central Standard Time,
>alanne1956@hotmail.com writes:
>
>http://www.xmission.com/~alanne/DS4Main.html
>
>
>Super cool, Alan! And just in the nick of time, too; I'm getting serious
>about rebuilding my old 13" f/4.5 with Wilkinson optics, and this is gonna 
>help
>a bunch in the inspiration department. It'll be the first time I go for a
>wire spider, and I'm very intrigued at the way you have offset your anchor
>points to eliminate rotation during collimation (especially since I am a  
>hard-core
>collimation nut, and tweak my 'scopes mercilessly).
>
>How do you think it'll do with three sets of "vanes", considering your
>method of offsetting?
>
>Cheers,
>Kurt Maurer
>League City,  Texas
>
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