Sylvan 0-6811

  
  

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ULSION LABORATORY California Institute of Technology © 4800 Oak Grove Drive, Pasadena, California

September 30, 1960

Dr. Joshua Lederberg
Department of Genetics
Stanford University
Palo Alto, California

Dear Joshua:

Many thanks for the reprints and references. I am enclosing
some prints of the flow diagrams, which I hope will be satisfactory.
If you would like more I can have them made up anytime.

I have had preliminary conferences with our instrument people
on your experiment. They are interested in the electronics, and I
also hope to get someone interested in the microspectrophotometer.
Whatever we cannot do here will be contracted outside.

Several possibilities were discussed. The use of a Fresnel
lens for utilizing solar energy as a low power, high intensity illumination
source for the spectrophotometry was suggested. This might be possible
providing we can catch enough U.V.

A vidicon was preferred over the flying spot U.V. microscope.

A binoculer type optical system, one side for U.V., the other
for visible light, was discussed, in which dual images on the vidicon
would be scanned and particle discriminations made.

It was considered necessary to study the trade-offs in the
weight of a data reduction system vs. telemetry equipment, i.e., how much
weight should be put into a data reduction system in order to decrease
weight in telemetry equipment.

A rough estimate of total power was 10 watts if soler energy
could be used in the illumination system.

I expect to have some work statements written up in a couple
of weeks and I will send them up to you for your criticism.

Best regards,

JET PROPULSION LABORATORY

George L. Hobby
Senior Scientist

   
 

GLH: aef

Enclosures
Murray 1-4261 Twx 7486x