(Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05171A000400020032-6
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: February 1, 2005
• Sequence Number: 32
• Publication Date: October 11, 1971
• Content Type: LETTER

g~
Approved For Release 2005/02/17 :CIA-RDP78B05171A000400020032-6
Ml.T-2~J~,~~-6~t
1 i t7~taber i971
25X1
25X1
Gle>sd is a eeopy of the Pre t311siget R~avi~rw Briefing Pac&a~,
~C?ffker-in-Chia~'ge
USA Cammunicaticrr~s S+srvice Group
Fait C3ffiae 1k~C
NA5 Moffett l~ie-ltl, California 44ti~5
Pmt b the wb~ect cdrat iter>~- 3 esttd 4,
fa plrroad a avk~it Monthly technical Pw~re~s Repot
Nas 5 end tha oc~ompwyrtr~ C.oatraltt Stafi~ iieport fix the
dt- not hetiwate'to Conte~t# or the undersigned.
,~hich urea previously provided t+3 the ~oretraating C;~fficer?s
technlwi Repirefentptive.
5hauld ~ infcu~eation releative to these repasts be required,
Very truly Y~+
V~~,eh
l:natrrMS ` q~ ~fMai~ Drell i~i~ ~op-ir eat
Fh- j aopla s~ ~~ ' o~d two (2) caplet of sMt~ deport
f+~hed ba
Contract 't Y++~chnla~ol R~ntative
D:eclas~fication Review by NGA/DoD
~~/ ~-
 pprove or a ease
?MONTHLY TECHNICAL PROGRESS REPORT #4 -ATTACHMENT #1
A control reference EJL lamp was shipped to Washington for a spectral scan
,with the Gamma Scientific instrument to compare chromaticity values obtained by
0
on a Beckman lA Spectroradiometer and the NBS color computer program. Because the
Gamma instrument was at the manufacturer for maintenance the test results are postponed.
The ASR and widespan stereo adapters were set up with the HILS mock-up
to evaluate evenness of illumination, field coverage, and filling of the numerical ap-
erture. Results were good, but the .5x adapters are needed to check full field coverage
of the 2-3/4" spot.
Technical progress in period included:
Package
the breadboard with new filter and i:i.ri lamp has been assembled and best
uniformity configuration established. Preliminary specifications have been prepared.
Motion system study continued to a point where the results of light pack
delineation are awaited. Two approaches have been conceptualized and must be inter-
related to the results of heat transfer tests before detailing.
Light Source
Spectroradiometric re-runs were made at Lighting Engineers in Anaheim
using the EJL and ELH and indicate that the filters bring the color temperature within
specification and at a CRI in excess of 80.
One-half dozen EJL lamps were tesfied for variation in color temperature
using the same optimum filter combination. All fell in the 4500-5000?K bracket.
Heat radiation directly to the rear of the ELH lamp was measured for heat
transfer solution.
25X1
Approved For Release 2005/02/17 :CIA-RDP78B05171A000400020032-6