Project Blue Book File on Tremonton Film, Utah, 1952

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Code 01/mrw/J.bb
•
'112
UNCLASSIFIED
Serial:
""'
MAY 4
1953
Subj:
Interpretation of Movies of Unidentified Objects; progress
report on
A preliminary detailed stud of the Utah film 'W8.S ma.de and 1t was
decided that:
a, Brightly colored spots of red and green lasting only one or
two frames were not to be considered.
b. Water spots could be detected easily and eliminated from the
study.
c.
The color of the objects was fairly constant as blue-white.
d,
Size and luminosity of an object varied through-out the film.
For convenience in interpretation, the film was divided into three
parts, each part being considered a.n entity. Part I consisted of the
footage taken at f8; Part II, the :footage taken at fl6 with a panning
motion; and Part III, the footage taken at fl6 during which the camera
w.s held steady. Three definite groups of lights were observed through­
out the film and plots were recorded as follows:
TABLE I
PLOTS OF POSITIONS
Chart
Control
Utah
Parts
I II III
Holding to lOYer group
Not enclosed
I II
Holding to one object
2 and 3
and at.1muth of another
I
Arbitrary 1/2 inch
4
correction per frame
for panning
Holding to frame outline
5a and 5b
III
One image held to base
6
I
line .
Every tenth frame
to show changes withth
apparent formations
DOWNGRADED AT ~ YEAR INTER"VAL'S:
DECLASSIFIED' AFTER 12 YEARS.
Montana
DOD DIR 5200.10
UNCLASSlfil.ED
Terrestial Objects
7a. and '7b
2