[ATM] additional lurie-houghton degrees of freedom

[Richard]

Hi vladimir,

Wednesday, September 20, 2006, 8:12:18 PM, you wrote:

vs> Using "aplantic" radii, and all else equal, for Guy's system,
vs> only with the mirror radius changed to R=-80" (-2000mm), 
vs> results in spherical aberration...

80" differs from 2000mm by over 1%. You can't just throw away
digits with this stuff, it can cause big errors.

-- 

Best regards,
  Richard in the UK