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ATM first Foucault readings
Hi all,
Just a short progress report. I took my first set of Foucault readings
today. Just to get an idea of what my mirror is doing that I can't get from
Ronchi.
1- .034"
2- .034"
3- .044"
4- .059"
5- .088"
6- .146"
7- .261"
8- .301"
Ronchi showed me that the center was still too spherical, but I could not
tell what zones 6-8 were doing. I just knew they were more corrected than
the center, but over corrected compared to the center. From these numbers I
can tell that zones 1-5 are under corrected and zones 6 through 8 are nearly
perfect. From here I know which way to jump.
Thanks to all,
Clear skies, Jerry