Re: [ATM] Re: ATM Digest, Vol 11, Issue 10

[artbianconi@blast.net]

Google.

I saw a technical article that referenced titanium ribbon 0.0007" 
thick by 0.0002" wide. The context was disk drive manufacturing 
but I am no longer certain because my mind started running with 
the idea of a super thin suspension system for secondaries and 
the other train of thought was disgarded.

I gave some thought to the fabrication problems associated with 
so thin a material (17 miles of it weighs less than a pound!!)

That got me to thinking maybe a wide piece, say 1" by 0.0007" 
would be better.

If it's being used in manufacturing, then somebody out there is 
making the stuff.

If you intend to work with this material, it's best to remain 
alert to the fact that at 0.0007" it's thinner than a razor's 
edge. It might work well for mounting secondaries. But a ribbon 
that thin in tension across a telescope tube could well be used 
to amputate fingers too.

If I find a source, I'll pass it along but first I will 
investigate the site Dale Eason suggested to I can better 
understand how spiders defract light. (Thanks Dale)

Art Bianconi
Milford, NJ


> Where did you find the stuff, and how much does it
> cost? Is there more where it came from?
> The thinner the better when spiders are concerned.
> Guy
> --- artbianconi@blast.net wrote:
> 
> > I recently discovered titanium ribbon. It's 0.0007"
> > thick.
> > 
> > Because it's titanium, it's strong as Hell and
> > because it's super 
> > thin, perhaps well suited to being the material of
> > choice for 
> > fabricating a spider. 
> > 
> > I am unclear how spiders cause diffraction stars so
> > I am 
> > uncertain if attempting to use super thin material
> > like this help 
> > eliminate them.
> > 
> > Can anyone shed some light (sic!) on this? Thanks
> > 
> > Art Bianconi
> > Milford, NJ
> > This post and any attachments were tested before
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> > 
> > _______________________________________________
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> > 
> 
> 
> =====
> Guy  Brandenburg
> Washington, DC
> My home page:
> http://home.earthlink.net/~gfbranden/GFB_Home_Page.html
> 
> 


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