Re: [ATM] Cassegrain, primary mirror perforation size

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

Hi Heiner,

Wednesday, February 28, 2007, 5:54:05 PM, you wrote:

HO> Provided this data your program calculates a hole diameter of 57.681 mm
HO> which I think is a bit too tight.

My program calculates the required hole to allow 100% illumination of
the field diameter that you select, ie all paraxial rays will be
passed. This has been verified against other programs. It's up to you
what you add on for baffling, etc, but 97mm for a 300mm primary sounds
huge.

-- 

Best regards,
  Richard in the UK

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