[ATM] Weird Foucault readings

["Jerry B. Hillman" <JBHillman@ev1.net>]

Hi everyone,
Here is my problem.  My Foucault readings have changed so drastically, I
don't even know where to begin.  For information purposes, I have included
the reading from last November which were saved into Figure 45 and the
current readings for comparison. Draw your own conclusions for the
disparity. I haven't got a clue.

Readings

                    11/03                 4/04

Zone 1             .027            .027    .025
Zone 2             .054            .043    .046
Zone 3             .085            .052    .056
Zone 4             .114            .071    .069
Zone 5             .143            .083    .093
Zone 6             .173            .120    .128
Zone 7             .201            .138    .142
Zone 8             .226            .172    .188

Mirror is 16.5" diameter
ROC is 149.5"
Source is slitless moving

Mask Zones
                Inner        Outer        Effective

Zone1        1.25        2.8            2.0966
Zone2        2.8          4.125        3.4939
Zone3        4.125      5.0625      4.6057
Zone4        5.0625    5.875        5.4763
Zone5        5.875      6.562        6.2232
Zone6        6.562      7.25          6.9103
Zone7        7.25        7.695        7.4742
Zone8        7.695      8.25          7.9749

Clear skies, Jerry


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