Mirror Lab

This picture shows a Foucault test on a 0.65-meter experiment epoxy telescope mirror I tested. This mirror appears perfectly smooth and uniform to the human eye but the Foucault test reveals surface irregularities much smaller than a wavelength of light. This mirror has deviations larger than one wavelength and a great deal of asymmetry in its shape. That effect causes one side of the mirror to form a different image than the other side. Not good.

 

 


Photo of TR
Office self-portrait **

Terry R. Richardson
Senior Instructor
Physics and Astronomy
College of Charleston
Office: 102 RHSC
Lab: 351 Lightsey Center
phone: 843.953.8071
fax:      843.953.4824
Email: Richardsont at the College faculty link
Mailing Address:
   Dept of Physics & Astronomy
   66 George Street
   Charleston, SC 29424-0001

** Some folks don't like this photo,
so here is an alternative.