U.S. Air Force Flying Discs File, 1952

Text

This text came with the file. It may have mistakes. When the text and the image disagree, the image is right.

SECURITY INFORMATION
A.FODT-2.A.2
MaJ 7ournet/dbv/71379
Wrtn 13 Nov 52
(Unclassified.) Return or Project Blue l3ook llater1al tr~
Chief. Ai.r !recbn1cal
Dept of the Air Force
~1 OV 14 1q52
Intelligence Center
Hq USIJ' - Am:ta
Maj Fournot/dbv/71379
•
Wr1ght-,;..l>ntterson.AY.B
Ohio
-=------..~
l. !l'he i"Ue on the sightiJJt a.t Austin, ~e:ms on 8 June 52, preTiouily' borrowed
:from.lTUA-5. is returned herewith.
iali-
a. !he Photographic Divioion. AFOAG, ma.de a set of color duplicates (enlarged)
-.ghich is attached for J'Olll' retention (Incl 3) .
lllaok and· white reproauotions pre­
Tiously attached to the file are aleo included 1n In.cl 3.
In addition. the
Photographic Division made a number of black and white enlarg8l!Jenta which are
attached tor your retention (Incl 4) .
3.
Based on further ana.1Jts1a. tbe Photographic l>irlsion and this oi"tice do not
agree with the \1ADC eva.l.uation of parb.elions (•aun doga") s1nce the imgea do not
appear a~ tho required angle of 22° or 46° nor are the:, 1n l1ne horhontall7 with
the sun as would be required for the f'or-.tion of a parhel1on (which vould appear at
tbe intereectiOA of the inner or outer halo circles -
22° and 46° respectivel7 ­
wit h the parhelic circle; the latter ia 1n a borbontal ,Plane coincidental with the
poeit1on ot the sun). .Ldd1t1oaal~. it vill be noted 1n the photograph• t1:5t the
1.magea di■pla7a f'l.a.t portion vh1chappeara inverted from the correspond~ portion
of the eun behind the cloud.
Since a pa.rhel1on 1a the result of refraction through
ice cr:,atals. the resulting 1ma£e would not be lnnrted.
Inst ead, it la OUP opinion
~
t tbe ima.gee are poH1bly a form of mira£e caused by a bot air mas• •,1hic·1
.W raTeled froa left to right acroH the field of' -view and act ed a.a a lena.
llowe-Yer,
there is a a.mall :1.Jia.ge in the third photograph of the aoquenci, which. lf' evaluated
aa another 1.mge .of the aamo tn,.. would eeemingl.7 el.iminate both parhel 5.a and
mirages from eonaldemtion.
lfhie ilage ia located directl7 above tbe ~eventh
telephone pole f'rom the right at a -vertical distance approximately equal to tbe
height of the pole.
The minute size ot this 1aage mili.tatea •trongly ago.inst the
muace theo%7 ,since the hot air m.ee would mve lad to tum about 90o and proceed
a•7 ~rom the ewaem 1n o~der to produce this effect.
Thare~ore, f'tlrther s.nal.7si s
appear• to be Justii'ied.
Suggeat the con•~t astronomer bo o.sked for an opinion.
x - .;,,-, ;:,,9 A-r,1 e,
4. Recoim:zend tlat the original photographs (Incl. 2) be returned to
owner
immediat el7 as request ed in the report ooTerin,: thie incident•
4 Incl a ( w/ ori,:. on.lT)
UILLUM A. ADAMS
1 . 8 Jun 52, ...w: Lir. ~ex
Colonel, USAJ'
Sight in4: Ue Eolder
Ohle~, !opioal DiTision
2. :En'f'elope eontainin£ 4: tranaparenciee
Deput:, Director for
tlillaJl'JtJ~~1'1
3.
~
•
color duplicates
Directora•
4 .
'1
•
bl.le a. whi~, enl.Arge!!lenta
COORDINATIONz AJ'OIB-~ '-
AFOlli-2A
Bo J!./t ~ecessa17, t elt-explanat ory.