Re: [ATM] Thin Spiders & Diffraction - Some Practical Considerations

[Jeff Anderson-Lee <jonah@eecs.berkeley.edu>]

Don Ware wrote:

>In practical terms I doubt you buy yourself anything with spiders thinner
>than .002" and
>as 1/10 degree is probably optimistic, spiders thinner than .01" probably
>don't buy much
>either.
>
Don't forget, the edges of the field of view may be 1 degree or more off 
axis in a wide field telescope.

Hence, the wires spider: the wire is round and has the same cross 
section in many directions.

Jeff Anderson-Lee
Sacramento, CA, USA

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