[ATM] Here is what happens when you warm the edge of a 18 x 2 Pyrexmirror

[Dale Eason <atmpob@yahoo.com>]

I thought you might like to see the results of warming
the edge of a 18 x 2 Pyrex mirror with my hand and
then taking interferograms and analyzing them. I
placed my palm on the upper right edge.  The mirror
started at 69 deg F and I placed the palm of my hand
on the edge for 1 minute. It raised the front surface
of the edge by about 45 nm.

3D wire frame image
http://home.comcast.net/~doeason/hand_heat.gif


It took about 5 minutes to take all the
interferrograms. Then the
results were averaged together. The mirror was cooling
during that time.

Color 2D contour map with Zernike terms.
http://home.comcast.net/~doeason/contour_map_hand_heated_edge.gif


A profile right to left through the diagonal showing
surface error
in nanometers.
http://home.comcast.net/~doeason/profile_hand_heat.jpg

Dale Eason


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