INTERPRETOSCOPE

Document Type: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP78B04770A002500040013-8
Release Decision: 
RIPPUB
Original Classification: 
K
Document Page Count: 
10
Document Creation Date: 
December 28, 2016
Document Release Date: 
May 12, 2005
Sequence Number: 
13
Case Number: 
Content Type: 
REPORT
File: 
AttachmentSize
PDF icon CIA-RDP78B04770A002500040013-8.pdf526.21 KB
Body: 
Approved For Release 2005/06/06 : CIA-RDP78B04770A002500040013-8 Oh Ae I1S/4TJ-~rj ~~ rem Qe4- L Declass Review by NGA. Approved For Release 2005/06/06 : CIA-RDP78B04770A002500040013-8 Approved Fo0lease 2005/06/06: CIA-RDP78B047X002500040013-8 The interpretation of information derived from photographs is today an indispensable aid in the solution of technical, econ- ornic, nd scientmf ci p~ot~i . Par-t-kola-r-l-y-h-igh-dema-nds-ar-&--placed on t e-readabil ty-of ,_photographs, especially of those of the sort usually taken from aircraft. To keep pace wit1 he continual improvement in photo- graphic materials and the employment of cameras fitted with high- performance objectives, there is required an apparatus which offers the possibility of studying in the laboratory the consistent spatial re a ions ips con acne n aeri p o ograp an ere y o ding pres-mt o-the-professim-a-no-dern-intexpretation device, distin- guished by its high level of performance, simplicity of operation, and sturdiness and rationality of construction. It satisfies all the demands, and even the wishes, placed on apparatus of this type. aeria photograph-pre-sents-to-the-viewer -a-survey-of -.--every v-isible-detailin-the-photographed ar &-at_some-instant_in time. The field of application of the-instrument-lies, therefmre, in those diciplines concerned with the changes, the description, or the study of the surface of the earth. By special interpretation 'of the picture content, which can be done exactly only under stereo- phot_pgraphs,_although in the preparation of topographic maps, for example, one must carry through an extensive generalization of the detail in order to insure legibility. Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500040013-8 scopic viewing, it is possible to extract quantitatively the total informat i conten o -tM picture-fact-interpr-otati-on-work--i-s- plotting l s o-awe-r-equi ,. t-f or the qugn itat-ive-ambatzx-of- aerial Approved Foelease 2005/06/06: CIA-RDP78BO47S 0025OOO4OO13-8 n this-way-tas services i n foresstrr,I-LSOe ~"'rc1Yt+J-Ta..+c'~"- od agri- culture, ae,"Jwze* commerce, and city and regional planning, as wel as for military intelligence. U sides interpretation tasks, the equipment also serves for picture scanning and for preparatory wotk on pictures which are to be plotted in cartographic operations, Picture scanning may in- elude judging the photographic quality, checking the overlap of adjacent pictures., the ig t path,, a-nd the recognition o mariced -P(>nts-sn-tie-ground.die-preparat-ienof-pietures-f?r-stereo- scopic evaluation implies the selection of the evaluation technique to suit the character of the terrain or the choice of points to be used in net-orientation ok triangulation, MODES OF OPERATION The picture material be interpreted can be on positive or t' inroll-s--or ndividual pictures,, , glasts Date-s.,-orpape"-There-are_ncZr_estrictiona on the-choice of emulsion. Thus, the material best suited to the task at hand may be used, such as panchromatic, infrared, or color. The range of motion of the objectives and the optical rotation of the picture are so chosen that steveoscoptc viewing of near- vertical aerial= photographs is possible without displacing the ictures. The-following-table-give-s-ii ormation-on the ange of anal i cation to_standard photographic ormats-.-- ,SIZE, CM. OVERLAP COMMON AREA CHIP PAIRS ROLL PAIRS CHIF. ~ PAIR ROLL PAIR 18x18 (7") no 50%+ inner or outer 23x23 (9") ` 40%+ 3 (12") 35-75% 35-75% inner inner Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500040013-8 Approved Fo.lease 2005/06/06 : CIA-RDP78BO47W002500040013-8 The-view-ing-magnification -may be-varied be-tween-2x-amd---15xi - the most favorable magnification. Magnification of greater than Thus,_ the interpreter has a broad rye of chaff r~~electing 15x generally yields, because of the grain of the emulsion, no improvement in interpretability. The 2x-15x range of magnification two xagas_sta es. from one stage.to the other_is-accomplished_bymeans-of-a-r-apid-- is divided into stmpxx Within these stgges, the change in magnification is--by means of a stepless-zoom system. -The first dtage extends --from-2x-to-6x while-the second extends from 5x to 15x. The change change of a turret-objective. No eyepiece change-is required,_though, so that the interpreter retains a nearly distortion-free stereo- scopic view of the picture throughout the entire 2x to 15x range. If the scale of the individual pictures of the pair is different, -'-'--tom zoom -syem will compensate in magnification up to a ratio of !lt 3; or by-using the-turret=ob7ectivez-as-wed; ug-to-1 The Interpretoscope consists of the basic units: Light-table for supporting the picture material which are connected to continuous side-members. The distance -between the-t Ye alyd-the yawing op ics s been a so en ]a rge ~so_ hat_the-oper-xtor-has-easy-aecess-to-the-p-ic-tures-. In the viewing unit the objectives and rotation prisms ~ move on cross-slides in the x- and y-directions under the control of hand-grips. The distance between the two objectives, to which the two pictures are aligned, is controlled by rotating a spindle which is brought out to the left hand-grip. When changing to a ! ii far t pictur- e format, e o sec vas can a approximate] -poslt-ioneout-ta-2-20-mm-(-g!04,-S za-t-the are-at us-tab-le-to a maximum distance of 310 mm (12"") armed a minimum dist-ance_od_ Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500040013-8 Approved F* lease 2005/06/06 : CIA-RDP78B04*002500040013-8 OPTICS --Tie pictures on t e Iig1it ti le are view-~ec-~rontally: --able--objectives p-ick up the picture-and- image- it- via -rotation - - prisms and Schmidt Drisms which acre individuallyadjustable-for--the right and left picture onto the intermediate image plane. The intermediate images are xizvi imaged through prisms and a zoom optical system which allows for stepless change in magnification onto the ocular plane. There the image is viewed through a Woub-16 ocul Tn the ocular p an S -166-a- a black, point -reference-mark: --The-operation- of- the- image rotation-and the -z oom- -_systems is -carried - out- -by_means-- of knobs -on_the_-front plate of- - the viewing unit. The optical system is notable for its especially large stereoscopic field of view and its high image quality. The size of the field of view in the picture plane is given by m mm, where m is the magnification. Thus, at 2x the field 41 s_ 0 -mm-(4 and-at-25x, 13nun-( "j . Theolserat thus has the o> + purtuni-tom to_ge_t-an-over-al-]r-v-iof th e--pic#.ure-a and then, by using a higher magnification, to interpret in detail. The resolution capability, referred to the picture plane, depends upon the magnification as the following table indicates; MAGNIFICATION RESOLUTION, 1/mm 2x 13 6x 1x -4-0 100 Approved For Release 2005/06/06 : CIA-RDP78B04770A002500040013-8 Approved Fcelease 2005/06/06 : CIA-RDP78B04*002500040013-8 In order to regulate the brightness, fluid filters are inserted into the light path. They permit the brightness of either picture low - eerregulated individually in both transmitted and incident light. 1'he-ee re obe-are-oar-the-frontpa ne off-the viewer uni. proved For Release 2005/06/06 : CIA-RDP78B04770A002500040013-8 awn-strips-Tongt-he-sides-o the plate serve to hold roll-film of any formatL oveable_and rotateable table-clamps hold individual pieces of film. Cover- glass plates serve to hold strongly curved material bit flat. HOLDING DEVICE FOR ROLL-FILM h"fd~t~embers o e appara us are removable holders for roll-fill~n-up o_32mm-{ ?'t",~) a ? T e d of-tY a leader is inserted into a longitudinal slit in the take-up d ibm- and-wound up by turning a drive wheel. ILLUMINATION The apparatus is equipped for both transmitted- and incident- iewing. Fluorescen amps are installed under the glass Plat to-previd2-eve j , , --- - ? on-fortran3 parenimmure materials-, Incident-light ilumi-n&tion ia-pr-avided_by-pr or- l ampsand condensors. These move along with the objectives ans thus always illuminate the portion of the picture being viewed. lass-late 3 em x cm x. 2 to Approver I- eIease ZOUO/Ub/Ub : GIA-F(UF'1t$tUU4WUUZO0004UU1:i-t3 -If-the-ftsght altitudend -the-distance- hetweentaking-goints ! is- known-and _the--difference-inlwriz.ontal-parallax_is -measured, the- -- - -- - relative object heights of neighboring points may be_calculated. For this reason, relative motion between the two objectives is provided for, as well as the free motion in the x- and y-directions. The base-line of each picture is oriented along the x-axis of the instrument by rotation of the picture in the picture-plane, while -thay--motion-I-s-cla ped scale to the nearest 0.02mm. The parallax difference is taken as while observing-the reference mark is read out _on a_ micrometer - ---The-parallax setting obtained by -turning- the---le-f-t- hand-grip - - - - -- - the difference between two conjugate readings. The parallax in the y-direction is eliminated by turning the right hand-grip. AUCESSDRIES- der-te-measure ---lAstanees-onthe-photagraph; -a-glass-wale isxpzxidet_2 ") long is provided, whose -smallest diYision on the first 10mm measures 0.1mm. The scale is placed on the photograph and examined through the Interpeetoscope. Besides the take-up drums for roll-film, film spools may also be fitted into the holders. Adapters are furnished for 20 and 2L. cm spools. The adapter tog ther with the oop rep ac the drum. -apooI cm !~-f ?1m-maybe-inserted-directly. For_.f-lat-teni.ng-str-o gly curyesl_materiat, 30x3D-cm_glass--plates ~i are provided. Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500040013-8 Approved Foor lease 2005/06/06: CIA-RDP78BO470002500040013-8 Magnification:_ 2x-6x and-5x.7-15 1; Magnification compensation between right and left picture: with zoom and turret: up to 1 :7.5 rieia or stereoscopic view: euumm/magniricara.on i - -Diopter -a djeutmei t - --- -IPD-Adjustment: - 55---75- mm-- - - i Illwr-dnated_surface:_ Incident light - adjustabike to 110 mm (4/") dia Transmitted light - 600 x 300 mm (24x12") Optical image rotation;. 360 deg Common displacement of objectives: (Free-hand motion) x-axis max 240 mm (9/") y-axis max 300 mm (12") Parallel-axis motion of objectives: x-axis 90 - 310 mm 1 3 - 12'') y=axis-+ 65 mm(-2"-) Dimensions: Width without film-holder: 1000 mm (391 ") Width with film-holder: 1260 mm (50") Depth: 700 mm (27/") Height: 5 }') Weigh mn-276- kg-( 0 1b ) Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500040013-8 with zoom: up to 1 : 3 incident and transmitted light. -8- 'Apparatus for interpretation of aerial photographs. Stereoscopic picture viewing with continuous change of magnification from 2x to -6x and -from--5x- to i5x--Viewing-of--cut-and-uncut-material-up _- _to_3G-x_30_cm_(l2xl2'q-format -with. 75%-overlap- possible-in--both- Approved F* lease 2005/06/06 : CIA-RDP78BO470002500040013-8 ;Shipment includes: Nomenclature Interpretoscope for 190 mm, 200 mm, 2140 mm and 320 mm film widths Order number 14-0-040 1 ea. Ground glass plate 145108:051-00 lea. Fluorescent lamps 20/59 TGL 8624 - 17a B 5 824 0 54- Gl7.14 7 ea. Starter, St 3 for lamps TGL 70-113 28 055290-0-31- . TGL 11229 1 ea Power cord 145108:065.10 8 ea Table clamps for single pictures 115108:002.11 1 ea iewin with F fi ht-f41-t- rs 2 58-3566B g e -ea.- 1 ea. Transformer 058011:002-.53 2 ea. Projector lamps T F1/6V 30W TGL 10619 1 ea. Glass measuring scale 200mm 147520 1 ea. Case for glass measuring scale ` 149705 it ar on muses for inc lig illuminator 145108:217.10 Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500040013-8 Approved Fcelease 2005/06/06: CIA-RDP78B04*002500040013-8 _NOMENCLATURE- - 2 pr Adaptors for film spool 19-2Q/120 2 ea Holder for roll-film to 32 cm width 2 ea Drums, take-up for roll-film to 32 cm - 2- ea Cover=glass - plat"- -30-)C-39- din 2 ea Hold-down strips for roll-film 1 ea Stool, black 1 ea Dust-cover -1-ea-Packing=case On Special Order _2 _ea Film gipools 19-20%20 2 ea Film spools 24/120 2 pr Adaptors for film-,spool 24/120 2- ea. Film spools 32/120 - MP NUAL ----. lea-Instructions 1 ea Plan and wiring diagram - --ORDER--NUMBER- -- __liG 7.3$aOa3 7-..11_ 145108:002.14 145108:082.10 1 5108:101.00 145108:001.11 042401 B 029510:079.24 029522:571...24 11.002.-2 , - 142651 A 147350_ U38 142652 A 14-G-352-1- - Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500040013-8