Re: [ATM] Help with star test interpretation - TUE, SA orsomething else?

[Jim Burrows <burrjaw@earthlink.net>]

At 2005-06-25 10:17 -0700, J Killea wrote:

>Mirror seems passable but on my first star test I instantly realized that 
>I was going to need help interpreting these patterns.

Star tests are best used as "second opinions" to see if the tester hasn't 
screwed up on a bench test - Foucault, Ronchi, etc.  IMHO, they can't be 
used to figure a mirror, i.e., what part of a mirror is too high or too 
low.  Besides, it's a major undertaking to mount the mirror, decide what's 
on the mirror vs. mount-induced astig, average out what the atmosphere is 
doing, and see some stars (biggest problem here in Seattle <g>).

For the best pattern interpretations, get H. R. Suiter, "Star Testing 
Astronomical Telescopes".

         -- Jim Burrows
         -- mailto://burrjaw@earthlink.net
         -- http://home.earthlink.net/~burrjaw
         -- Seattle N47.4723 W122.3662 (WGS84) 

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