Feb 7 1996

1:30 PM starting sample 15 aluminum foil

before setting aperture we  noticed lens was
dirty

Cleaned lens, and tested various lamp positions and sample 
heights and moving lamp back and forward (changing the 
divergence) in order to get a beam as homogeneous as possible.

new setting z=360.
changed height of camera on tripod to compensate for this.

aperture two ticks above 16
p = 17 l=161 z=360


5:05PM finished 

starting lamp calibration (since it was cleaned and moved_
Having problems with photometer height photometer tilted 1 
degree to see
first row of the calibration card.

lamp calibration directory in c:\960207