Re: [ATM] 8" F/4.2 progress

[Jim Burrows <burrjaw@earthlink.net>]

At 2005-10-25 23:31 -0400, Jason Hissong wrote:

>I wanted to get the scope together so that I can star test during the
>figuring.

In general, using star testing during figuring will make your figuring go 5 
(10?) times slower.  Use good ol' Foucault, (or maybe the LWT (Lateral Wire 
Test) - Foucault's hard at f/4.2) which doesn't depend on waiting for a 
cloudless night, good seeing, etc., etc. - also it's hard to tell from the 
star test what the next figuring spell should try to accomplish.  The star 
test is a good second opinion before sending the mirror off for coating 
when the bench test says, "You're done!"

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

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