NASA 
Office of Space Access and Technology (OSAT) Sensors and Instrument Technology

NASA Space

Sensors and Instrument Technology

SIRTF Cryogenic Readout Letter


Scanned image of letter (JPEG format).

Text of Letter:

November 16, 1994

Dr. Craig McCreight
Chief of Sensors & Instrumentation Branch
Ames Research Center
Code SFT
MS 244-10
Moffett Field, CA 94035

I would like to congratulate you on behalf of the SIRTF Project for the successful completion of the cryogenic readout technology development project which you have sponsored on our behalf. As you know, test results from the first lot of Hughes-fabricated readouts are very encouraging. SIRTF performance objectives are clearly met by these new devices and this performance has already been factored into our 100µm focal plane design, greatly simplifying it and improving the efficiency of the SIRTF overall.

Your solid technical approach and wise management has paid off in a big way for our project and for others who will have similar needs in the future. Cooperation between your sensor technology program and our application project has been exemplary. We could not be more pleased with the outcome.

Although there will undoubtedly be a few bumps along the road to fully flight-qualified devices for SIRTF, you have given us a great start. We thank you for delivering this exciting new technology to us and look forward to continuing our productive and rewarding relationship with you.

Sincerely yours,

William R. Irace
SIRTF Project Payload Manager


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Created February 28, 1995. Last update: February 28, 1995. Maintained by Gordon Johnston
Gordon.Johnston@hq.nasa.gov