Re: [ATM] A challenging 28" project

[Richard <cnc@cncservo.co.uk>]

Hi Dominic-Luc,

Sunday, August 5, 2007, 11:13:30 AM, you wrote:

DLW> While we're talking about this, I wonder how well matched
DLW> the microscope objective's NA needs to match the mirror?
DLW> For the mirror, you can make any NA you want, but choice
DLW> of exact NA for objective is limited.

I would think, like any optical system, the best performance will be
over less than it's full field, so I would use an objective with a
wider field than the mirror requires to fill it. Theta is bigger so
Sin(Theta) is bigger so NA needs to be larger than the mirror needs to
fill it. Mike will be along to correct me shortly :)

-- 

Best regards,
  Richard in the UK

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