Re: [ATM] New web pages & WIRE SPIDERS

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

matt wrote:
> The Moonlite is doing it at a lower load than other Crayfords . I did
> actually put a dial indicator on it and measured at that time that the body
> was actually flexing, but didn't keep any record of how much , so it's just
> my recollection.

Wow!  If the body was flexing, I wonder how much the rod was bending! 
  My hat's off to you for taking measurments!

> Bottom line, if I wanted to design a Crayford like that,
> I'd start with a closed shape . I must confess I have no idea of course why
> the Moonlite is shaped the way it is, I am not more qualified to comment
> than any other ATM out there, and I aesthetically like the shape.

Less weight, material, and easier to install the bearings, I would 
guess.  Bolting it to the focuser board adds some to the stiffness at 
the base of the focuser, so there must be some twisting going on!

Someone could easily add a small strip of aluminum near the top to 
stop the sides from spreading apart.

I think the MoonLite was overlooked in the past, but now is becoming 
more popular for visual use.  IMHO, they are smoother than the JMIs, 
and you don't have to adjust them as much.

	Mike L.

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