Re: [ATM] 8" F/4.2 progress

[Jason Hissong <jhissong@gmail.com>]

Hi Jim,

The Lateral Wire Test... I have not read much about it.  Is it easier to 
null out zones with that one?

Jason

Jim Burrows wrote:

>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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>  
>


-- 

"A long journey starts with the first step and an understanding spouse."
http://www.undermidnight.com - astronomy and astrophotography
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