Re: [ATM] Unique New Equatorial Platform Design

[Jeff Lowe <lowe@nanotechsys.com>]

Don Clement" <clement.focuser@verizon.net> Wrote:
 >It is possible to get sub-arc sec tracking using
 >more conventional methods. Here are a couple of
 >methods that I have experimented with in the past.
 >I am a believer in the use of averaging a number
 >of less accurate drives  to create a more accurate
 >overall drive. About twenty years ago, I saw the
 >cable drive used by a company to rotate a wafer
 >saw with sub-arc second repeatability. The flexible
 >rod drive was my idea. I have since been working
 >on a direct drive "centipede" averaging drive system.
 >
 >http://mysite.verizon.net/res0owmd/id4.html

Very nice final reduction. I've always has a soft spot for Wire Capstan 
drives. At my former company we licensed Sagebrush's arrangement and 
wrapped the drum around an air-bearing table we manufactured for use in 
a dicer. It worked quite well with resolution and repeatability in the 
deep sub-arc-second, and accuracies in the are-second range.

Is the centipede type drive using the Nanomotion type motors?

-- 
Jeff Lowe

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