Project Blue Book File on Tremonton Film, Utah, 1952

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U. S. NAVAL PHOI'OGRAPHIC INTERPRETATION CENTER
U. S. NAVAL RECEIVING STATION
Washington 25, D. c.
Code 01/HWW/lbll
Jl2
.UNCLASSlflED
Serial:
(1
I
From:
Officer in Charge
To:
Director of Naval Intelligence (OP-322H4D)
Subj:
Interpretation of Movies of Unidentified Obje/.;
progress report on
Ref':
(a) Cont ltr DNI OP:,22Y5/rtm., dtd 27 Oct 1952 Vi.th
enclosures thereto
(b) Conf memo, Chief, Topical Division, USAF, AFOIN
2A2, dtd 24 Nov 1952 with enclosures thereto
(c) PIC Conf ltr 01/RWW/gcl, ser 0263 dtd 5 Dec 1952
(d) Rest memo, Chief, Topical Division, USAF, AFOIN
2A2, dtcl 16 Feb 1953
Encl:
(1) Charts 2-13
1. Reference (a) is a request from U, s. Air Force for the
i nterpretation of movies of unidentified objects taken in Utah,
2 J~y 1952.
Included among the enclosures are approximately 30 feet
of processed, 16aun color motion picture film and a list of questions
for guidance in determining the type of analysis desired. Reference
(b) requested interpretation of additional movies taken in Montana,
1950. This report supercedes reference (c) and presents the test
procedures and methods designed to answer the questions contained in
enclosure 7 of reference (a).
The results and analysis were performed
by the Photogrammetry Division, Evaluation Department of this Center
and do not necessarily represent the official attitude of the Depart­
ment of the Navy or this Center.
2. Tests and Procedure.
a. Plots.
rThe film exposed in Utah ie i n very poor condition; dry,
brittle, and with a tendency to break. After initial viewing,
duplication of the film was peri"ormed in order to preserve the f~ ­
In the duplication process some color coITection was made to permit
better viewing of the objects.
To prepare plots of the objects, a
stop trame projector was rigidly mounted at a fi.Xed distance from a
finely-ground glass screen. The magnification was 22 times giving
a format size or 14.2 11 wide.
This proved very satisfactory and
provided a shadow free image upon which overlay plots could be made.
DOWNGRADED A! & YEA'R !N'l'Jm, 1 A~~
DECLASSIFIED AFTER 12 YEARS.
UNCLA
DOD DIR 5200.10
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SSJFJED
DECLASSIFIED Authority NND 923007
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