LETTER TO MAJOR DANIEL ANDERSON HEADQUARTERS STRATEGIC AIR COMMAND FROM (Sanitized).

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP67B00820R000300090018-5
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 10
• Document Creation Date: December 14, 2016
• Document Release Date: October 2, 2002
• Sequence Number: 18
• Publication Date: December 23, 1959
• Content Type: LETTER

Approved For Release 2002/10/21 : CIA-RDP67600820R000300090018-5
December 23 1959
Headquarters Strategic Mr Command
United States Air Force
Offutt Air Force Besse, Nebraska
Attentions Major Daniel Anderson-DIMD
Dear Andy:
I am enclosing for your information a copy of a
report which describes the basic design and operation
of th, Mark I Viewer. In general, this viewer allows
a P.I. to view 70 mm. roll film positive transparencies
of 100 Ilmm. resolution at 12.2 X magnification without
significant' Image Quality degradation. Additionally,
the viewer has a capability for mensuration with a 2%
accuracy.
We shall be happy to discuss in more detail the
specifications for the Mark I Viewer if you decide that
this is advisable.
Sincerely,
RIDi bre
Enclosure
On file USAF release
instructions apply.
STATI NTL
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1.
portion of c9ntact Poiittvgctraasila
?
at adoguate ma. gnificatitga and to determine distanCall between two points
in trui feet on the tround0 its excellent optical system couple ely prit.?
serves the information contained on the 'positive transparency.
The entire viewing portion-of-the unit, including the optic.al
*vitro, the ili transport and the associated electrical chassis, is con-
. ?
t*ined in'aqe Ambinet.?:X6'wcomPlitec
th.e di?alVolt/astir
lf Imp**e cabinet
ft'ot r- of eiirrtir
upiert to a large Mirror, which is. turn refleets theLbelim. hitch and 'doin to
the largest of the mirrors which direett the beam forward onto the Illoreene.
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Apprcted FprRe1ease.,12.002/40/21'.:6AA0p6t00800000$0910,91.0.5:..
ijUStmentuoi th4LMtrrorsaro.,..?
appear pr?r1yon the.*ereitri T40 of ,adjustments ca be changed
0
?
?by'gre;SiS'i's'I:rebtiOn4 ihich caees the :image, to rotate 180 t the
o put
HapparentA0tieon toverd the top of the :The.. .mirrors are made o
1/2 and I p1.te gists,. ground ad ii,hedto s flatnesS of 1/10
fringe over the effective lens aperture. They are front-Iturfsce
nized end over-coeted with silicon mor,oxide.
The optical system consists of the condenser essemly, the pro-
jection lens, the mirror asseMbty, oin.d the screen. The condenser assembly,
leach is of conventionel ';gn, zon.csins three plano.7..convem 'lenses two
heat filters, a 1000-wmtt projector lo.11b,.and a spher,ical mirror behind the
lamp. The undsumlly efficient.hestabsorbing system usis an interference
reflecting filter and a special absorbing filter.
The.filmunist be held flat to within #.0.003 tnches or batter
screen
in order, to remain In accurate focus. .initial attempt to mccomplis
this,th.-film vas held under ,controlled tension between pair of rollers
,
This tech.1qtt.e-Mes foutd to be utss t mictpry;110vevers o a.specia/li d '
.,?. _ . - . . .
4
'Leisi" ass -v. plSten wm
, e:' isa *aaaga.'that
--.the very :f, 1::',.'is lost he' h u is r1eaed to t'-
but it deer.-
., sem,to impair the -ensuration'...0r,..acanm :ability.
:-' ,:, .:',?.',.,4,,,,...'i... ..7,'
,
0 ect on'leaSes were tested and the
- _ ...-,..
A number of high kuility,p
_
Schneider COOP:mon -lees was, found -t
for its
a
leldtcurvature. A. field" flattener
standing performance.excep
*signed to compensate for
the curvature end vas tested vith.axzellent resilts.
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' . ?
App 02/10/211t'CIA-RE)P61130082010003000460t0=5
roul' coan' y screen ststatialt teeted 2" two if,ers found to be superiors
white pl.iistic, if the mit is used in a darkened room; AO a cosesercial. ? ?.--?
material 3.enscrean for Use inc semi-lighted room. This latter sa... ? .
terial has been selected for installation it:the unit.
III. Tilm.Tramapcil a..2./ContrOls
Mez..hanical .and electrical prevent TVISUritt :OA daring
the slew mode if lperd.to. Interice_avo- tI7.e. additional. function ,of
preventing any tilm whelt iAya'_en, 14
The film trmnsport *ill handle up to. 500-foot reels.. Tha trans-
port unit is loaded through a plat of docreon each side of the cabinet. '
The film drive unit and all optical components, including the.
scrseui are mounted .on .m separate frame within the cabinet. This will
ensure that the unit is stable and free from any vi.brati.on auld stresses ,
introduced by. the building and operator. All the optical components art
- ? . ?
mounted so as to prevent mechanical *treas.',
' The following description is keyed to the operation of each, , ?
.?
item OA the console control panet with additional information as refair'
it is not intended as an engineering description of the vatt4i.piant.' The
?
controt panel is shoji% in Drawing J.-301.95. From left to right, .ftiet items
ntre listed below., ,
.. ,.
A., Power Switch. 444
,
?
This is a three-position toggle switch with the center position '
as l'offn. The lower 'position is the standby position for warming up the
computer and 'other elements reluiring a continuous operating condition for
proper operation. There is a time delay relay in the circuit so that even
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ili0e:*,17102/16/21':CIA.RpP6IB0082CRt0,03.0900018-5--
;
, .. .
to the " position first,' l5 lepmates elepsea?,,
to operation. The projectionlsmp is operational Only when .the
*switch is in the on position. Indi.etor.,lights *tate switch shot the,
condition Of the viewer at all times.
B. irlim Control .
? The film .control switch is 'a joy-atick type Control. Movement
to the right or left see the film to' advance through the film path.
The stick is centered for 'zero motion of the-film and in-this position ?
the :manual controls may be used for finsl:eetting of the film.. The speed
of the'film motion is contrAled by the distance the stick ii iroved'off'
vertical. In the extreme poeition, a twitch is engaged and ? .the film moves
it maximum or slew speed of 200 feet per minXte. The scanning speed is_
-variable from. 0.5.to..8.0 feet per minute:.
C. Horizon-
The horizon switch. rotates a mirror in ;the optical systte to
control the position of the horizon.- The horizon should *luny, be at
Atop of the screen. lovevii.,-.vith horizons &t each end ,of the frame,
. -
rOtitica is requitsd *This es-A tvo -post
tIsd.
listi.,resettsbis covstor is.gott
dionee-the frane.nnuiber Under study.
*ration or any other'oeuse the number is in error when.* .certain fr
a-
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Oomputer
The ...computer knob can be sit for the various multipliers
the digital voltmeter carries significant ?figures at all tiles.. The midi*
. .
sat position. is Used for setting the computer With. the Proper nadir tef
due to roll. of the. eiroreit. The "off" position of the* switch disengages'.
inechinicel clutch to remove the cceputer from the davit system...
F. Altitude
This precision resistor is set for .the flying 'height-of the a
titled *is, input U. the computer as part of tb4 ,poSitional'computatiiito.
G. /jai -
This butttin,when depressed, will establigh-a 'reference point fo
. initiation of iteasurtusents.. This will enable
t tomeasureirbal
tances at any pcflUt in the-format as Isell.44 dietences from th
v-
. , ,
klanual Film lirktom and ;Goiters,-
.1611PqmLa used in thCfP441:**
sseent. With Oat tomipupir.controt'set it !Off!, the
the film center is em the center
The computer control. is then set to
ift.t0 the nadir.Uff4ot in miUin.tersi.tinto:the 007:411,
During this .operation, the till iensinS fixed and t1e. aria:hip umni
only to the cc:mutter dial. This setting starts: the.coiOnter in the`p
ri?
. ?
geometrical position for further.computations. When thikpimputer opptx0.1.;
is set in one of the miltiPlier pOsitioitA, the =niters Sr. connected to
,?
the fill drive, both manual and remote. The counters are so set that when
'
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911 '0It'and the ablesr * *vitt.
,
ositive.sid segative'directious of'these.cOaapteri ste f
sritoi2must-ousrasi judgsseni wheischiagiss ?risnteUenof
provost maasureseat errors.. The OP forthia.setiou. is ha
this time .oix aiailable for operator trainiut ouothes
The focus sonkrol isa asb.*ticaj. cortusetion ihich leovi
t for the operator to select ids *isms focus.
Srilliaaie
.',Thiahrily.aace.aoutrol is. spriav4ea4ed tbX*wpitLo
t4h. .This switch activates it motor-driven rise to ilicioas* or d."
Approved For Release 2002/10/21 : CIA-DP67B00820R000300090018-5
The ?lotions to t&sge 'tWo .fusitions feria the has
orament ospabiiity. of this. viowet; Of the above foiactions; I One
for,any frame and is set into the' computer by the oPers.tor with &
pans?. eoJLtro1..Tha joCal?leigth is a constant' for all exposures *
, ? ,
et is designed for use with only one eitex,*; The trij Lotions
?
ths
Yarilblts iich s,flitips=ssisr d omputSt-log
Pio of tke..,C11,Urer ss Pros,
? .?
thea oied to .zLte
the alt.itude Veriao, The iettistg of the altitude on this Yari.acs, Sup-
.
,2
Pit voltage to (3),
,
4) the t pots
display ranges0 The fi1 and Cursor are then moved until the Xniti44
point. Of a measurinent is under the crass' wire. The bottiti
? ,
pressed supplying power to the I and "f strvos which in tarn set the
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416,
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;
pt?.tLt*tsrs to
ra, t
Vit to t1. servbs ?ii.rcved-
remember the I *JOY p*ttttrof point A. The LIs drive
,
sitiessed *Mr the terMt4nAtiOU p?tt. of **UX4132.**
tor . sum of a $ine" and: cosine voltage is dist inyed
,a ground distance ix feet.
Tht? :factor limiting the *recta is first La tb
veriota centrol. pottc;,,,If, for'tie iath*strd1jta
.d ie one /lienfaCt
ga,'the* each of'?
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C
to be ifx.odified, if'.the'viever Ls to be
cept photography from camerae Of :Erma., ssri.p
coinatsr or other feeeZurationai. deAce mist accommodaper the foxtSp
AO various tilt Orie4tetione ac veil is other cC
dee* differeht =it*
vial. the other Li to use the !Lover
**coding s and y informati
type ccuter. ? Bach of *fa* lifIratIleg.hilt
gii, Xu the cooritor praseatly designed
?
Approved For Releaie.2002/10/21 : CIA-RDP671300820R000300090018-5