Re: ATM Dobsonian design questions

[Ari Friedman <ari@birmingham-us.crosswinds.net>]

> Date: Tue, 06 Jul 1999 22:13:47 -0400
> From: Shannon Hughes <sr.hughes@worldnet.att.net>
> Subject: ATM Dobsonian design questions
> 
> I am a newcomer to the ATM hobby...currently waiting on my 8" WB mirror
> kit. Thanks for the posts that helped me decide on the 8" rather then
> the 10"...portability became a priority. A 8" F6 will fit in my wife's
> Nissan trunk.
> 
> While I am waiting for the blanks I have been pondering a couple design
> decisions. I will be modifying Berry's 10" design so it will be scaled
> down for a 8"...if anyone has done this I would be happy to hear about
> your construction stories. More specifically has anyone modified Berry's
> mirror cell to help reduce the tube currents or is this even necessary?
> I also remember seeing a web page that described how to make a spider
> from hacksaw blades when I first became interested in ATM but I can't
> seem to locate that page...does anyone have that page bookmarked,know of
> any other spider design pages or have personal designs they could post?
> Thanks for all the advice. This list is great!
> 
> - --Shannon Hughes

I believe the hacksaw spider you are refering to is at
http://hem1.passagen.se/astrosci/atm_diag.htm. However, when I try to go there,
it gives me a message in a foreign language (Dutch, I believe). 

For working spider designs, try:
http://www.idle.com/~markv/secondary.html
http://www.europa.com/~swayze/spider/spider.html
http://www.glpbooks.com/oyb/roscope/diaghold.html
http://www.geocities.com/CapeCanaveral/9601/focuser.htm#holder

Good luck,
Ari Friedman
There's light at the end of the sonotube.
Ari@bitsmart.com
http://www.bitsmart.com/ari