Re: ATM Supplement to Foucault Follies

["James W. Burrows" <burrjaw@halcyon.com>]

At 21:50 1998-12-20 -0700, Roger Ceragioli wrote:

>Optical Dia.: 7.96"
>RC: 63.75"
>Inner edge of zone 1: 0.00"
>Outer edge of zone 1: 0.89": -.173
>Outer edge of zone 2: 1.84": -.162
>"  "  "  "  " zone 3: 2.56": -.143
>"  "  "  "  " zone 4: 3.11": -.120
>"  "  "  "  " zone 5: 3.58": -.095
>"  "  "  "  " zone 6: 3.98": -.072
>Again TEX and ADMIR will calculate the mirror as being undercorrected
>(about 1/5 wave PV).

Sixtests says the mirror fails the Rayleigh Criterion @ 1/3.7, but passes
wavefront WRMS and Strehl at 1/15.2 and .843.  Most of the error vs. the
best-fit parabola is in the center of the mirror; with a 40 mm secondary
(20%), all numbers are go with wavefront P-V=1/4.3, WRMS=1/17.9, Strehl=.881.

        -- Jim Burrows          phone 206.244.2933, fax .0294
        --                      mailto:burrjaw@halcyon.com
        -- Seattle              N47.4722, W122.3661 (WGS84)