TWO STAGE RECTIFICATION SYSTEM; PROPOSAL FOR

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP89B00709R000300540020-5
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 18
• Document Creation Date: December 27, 2016
• Document Release Date: October 6, 2011
• Sequence Number: 20
• Publication Date: March 21, 1956
• Content Type: MEMO

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E,?ci204'4-
Tos Central intelligence igemey
Washington 25, D. C.
Contracting Officer
Attnt
21 March 1956
RR-6224
Prcau Reed Research Inc.
Secretary
flubj: Two Stage Rectification Systea; proposal for
Reft (a) Conference at Peed Research between CIA Technical
Nrconnel and and of Reed Research
Xmas (1) Estimated Cost Ireakdown
(2) Photograph of Tun Stage Rectifying and Projection Printer
1. As discussed during reference (a), Reed Research proposes to
furnish all asoessary labor, services, and material to &Wiest, and
deliver a precise rectification swot** with the following pertesnmess
ohareeteristics:
A. Beth the transferming pointer end the anterooms peolooter
shell be designed to ameemmodate file np to 194/4 Sashes
wide. They shall both be savable of prejeotims 19? s 190
tenet.
D. A betweenothe-lens shatter sod suitable bellows will
be provided en the projeoter so that Money be exposed.
C. the present megairisatios nese will be appliesble ealy
to the 9.4nSh end Wimsh serial phstegrephy teOnnts.
The magaitioation range of 190 x 1911 formate will be
somewhat lees.
D. Cereal semeideratian of a more imitable light seem will
be made.
11. The easels will be maitlay eompartmented ant valved to
assure flat, positive Wheels& to the easel or small piper
slam.
I. CemeMoration and lealmeina of a amitshle methed ter leslideitig
the projestion motes tree external vitratien. wrill haInde?
STAT
STAT
STAT
ae
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*petrel litelligease Agency v. Or* WO
nR.6224
2. We here checked by means of graphical construction the roetlileetlea
VOW of the ilypergon when waiting with 19' x 196 format. We hsve tend
that these porticos of the serve determined by the lens field would he
foreehertesed pir approximately ti. degrees. Ible wee detesmitmed far the
2Ip4eek emd Wine* focal leasta ?arm is shows in lee lea
newel. We ere aseamdag that It will eise he tree for
fbeel lengths or effective fecal leegthe of the aegetkre in the ease
of two-stage work.
3. It is estimated that this foregoing oon be empleted sed the
instrument delivered and oalibrated within eight maths after reeelp4 of
an sward. We request that the *entreat be negotiated on the basis of a
$70,915 estimsted cost plus 17,100 fined fee, as detailed In eaelceers (1).
It is further estimated that for an aeeelerated delivery of the imstrno.
manta within six months, overtime authorization would be necessary 4111d
the total roe and fec would increase 15 percent.
rsrm PESSARCR
Secretary
KM MS talc
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STAT
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NUM GO" MR=
larboti Naterial $19,00.00
bisima IMOwring -
3.010 Mn g JIM 4,050.00
Overhead 60% 2,430.00
Dine% Labor -
7100 hr e 2.50 17,750.00
Ovarbaad
60% ?MAMA
Total
$54,550.03
0 & A on above (x4)
26,169O
$70,915.00
Foe
_________
=MIA
7,g) is -0- 1.521 9:} / 7 (6-
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febraary 10, 19 56
Subject: Proposal for desk model stereoscope and related equipment.
Dear Sirs:
This proposal is regrettably late in coming, but the last ten days have
been spent on consideration of what is involved.
As I understand the task, there is a need for a modest number of inex-
pensive desk-type stereoscopes that can be used for long hours by a seated obssrv-
?r without undue fatigue. The stereoscope must be usable at various optical mag-
niftcations on prints as large as 9 x IS inches. The prototype should be designed
and constructed rather promptly to permit evaluation and lag time for production
to follow. The desk stereoscope should not be streamlined unduly if extra costs
are involved, but should be a good, ragged system well suited to the intended pur-
pose. Standard parts should be used wherever possible.
Some pressure of time might be relieved by the quick design and fabri-
cation of a light box and easel, combined in a single unit, and built mostly of wood.
The use of the easel approach would facilitate reduction of the prints at an early
date, using ordinary commercially available stereoscopes. The easel would have
a central slot and ample clearance beneath in order that the observer can handle
his large overlapping prints without used to fold them upwards. The slot in the
easel would have curved walls that would prevent creasing of prints and would so
far as possible cause the prints to follow natural beading. In this way any stereo
overlapping of objects could be brought to the usual Interpupillary distance of the
observer on any matching parts of the 9 x lit prints. The slot and easel would per-
mit easy orientation of the prints in aaimuth to permit alignment of the fields for
proper stereo vision without eye strain.
The light box would be designed to illuminate the prints uniformly with-
out shadows and without specular reflection in the direction of the observer's eyes.
A special light box surface could be provided that would serve for uniform illumi-
nation of a positive transparency on either side of the slot, following the device
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-2- Febraary 10. 1936
developed several years ago at WADC.
The entire light box and easel would not weigh more than 30 lbs.. and
hence could be located on any flat surface, desk top or otherwise. The easel
would have an adjustable slope for the comfort of the observer in Waal** over
the ordinary stereoscope without need to stand at ? table. This is especially
important for the large prints. The easel could be so designed as to minimise
the strain experienced by the observer In looking at the top of the 9 x 18 prints.
One might consider also a rotatable easel that would permit the observer to
examine the lower 9 inches only, followed by a 180-degree tura for further exam-
ination of the upper 9 inches in the lower 9-inch position. The reversal might sot
be favorable to easy interpretation of continuous sabjects, bat it would prevent ?
crouched attitude of the observer. A sloping easel should be reasonably (maven-
tent. The observer might adjust the tilt to his liking. A retention device might
be added at the top of the easel to keep the prints from sliding downwards, while
at the same time permitting overlap adjustment.
The light box and easel combination is but a temporary solution, but
might be a good deal cheaper for general use than production of more permanent
type scanning desk stereoscopes in too large quantities.
If such a prototype light box and easel is to be c trinittaided for from SPICA,
it would be on a cost basis under AF-type practices. Because of the writer's asso-
ciation with the governing committee, it is feared that a conflict of Interest prob-
lem might arise. It is suggested, therefore, that the writer not charge for his per-
sonal time in performance of the proposed contract. At the same time, it is clear
that not too many hours could be so expended away from other, reasuaerative tasks.
Whether there should be a fee or not to go with the proposed cost type contract
should depend on the evaluation by the Government of the situation. The contrac-
tor will be willing to accept a non-profit typo of contract if that should be offered,
again to overcome whatever conflict of interest problem might aria'. However, it
is realised that a non-profit situation might not necessarily be the proper solution
from point of view of the Government, since there would then be some implied lack
of responsibility of the contractor, or some favor might be intended. Hesse, what-
ever course is deemed advisable by the Government will be satisfactory to SP/CA.
although, of course, subject to business negotiations.
It is difficult to estimate just what such a light box and easel might cost
in prototype form. In a production run the units should not cost more than $150.00
each. The prototype might run to $2.000.00 for engineering design, mock-ups.
trial reductions of photographs. conference work, and the like. Nothing elaborate
Is planned. It is simply that good cabinet-making quality can be expected,. that
light switches will be good ones, that ground glass easel faces or plastic easel faces
might require special attention. etc.
The primary subject of this proposal, however, is the desk model stereo-
scope. I would like to consider the instrument as designed and built in two models.
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.3.. February 10. 1936
These will be described below.
The writer has considered all the points readied in conferences with
Government personnel on the problem of the desk stereoscope. His suggestion
that rather large mirrors be used to aid in the reduction of stereo-pairs turas
out on serious study to be rather clumsy in all respects. The writer believes
that the ultimate users will not be satisfied with such a device, however clear
the imagery may be. The curvature of the mirrors required ceases sack a depth
of sagging that there would be considerable initial expenses in obtaining proper
materials. Also, being of glass, there might well be breakage in use that ahead
be unnecessary altogether.
After considerable taitly of many points and many optical arrangements.
I feel that the most useful desk stereoscope would be a modified version of ? per-
iscopic type described by me in ? receat conference in Washington.
The "Model I" periscopic scanning desk stereoscope would have on either
side of center a double arm containing ? large portion of the periscopic type optics.
There would be two swivel points, where the arms connect to este another and where
the two arms conaect to the fixed center mounting. The double arm would permit
the complete scanning of a 9 x 18 format along any path chosen from sae part of the
format to another. The actual motion will be basically one involving polar coor-
dinates of the arm as a whole. but the double linkage is necessary to preserve
opti-
cal path length. while permitting the radial changes.
The pick-up objective will then be fairly close to the plane of the prints,
say, five inches away. The light rays would then follow a horisontal arm ter a die-
Mace of about 10 inches1 proceed up through a swivel joint containing prisms, fel-
low along the second arm in a horisontal direction, then up through the mead
swivel joint containing prisms, and theace through an inclined arm to the eye of the
observer. Thor* would be intermediate reimaging optics of periscopic nature.
There would be an identical arrangement en the other side of tenter for
the other eye and photograph. Interpupillary adjustment would be provided for in
standard ways. The image plane before the eyepiece would be reduced to about
half-scale, simply to preserve the field of view through the long tubs. Magnify-
ing and interchangeable eyepieces would be provided, permitting a range of map
*Megaton from Z to 10 times, with respect to simple magnifiers used on deo pried.
The sig-sag arms in effect can move over a considerable area of the desk
top, bringing the field underneath to the fixed eye-point for the seated observer.
The observer would be looking in a slightly downward direction, say at a slope
eagle of SO degrees, for maximum comfort. The eyepieces would be *greed at
about -2.0 diopters to prevent too much changing in, focus of the accommodaties
of the eye between writing notes, overlays, and stereo-examination. The eye?
pieces would, however, be focusable, with scales, for the convenience of differ-
ent observers.
So far one has a general purpose desk stereoscope, requiring rather awk-
ward uncontrolled scanning of either oriel. To allow for scanniag over large pitta's
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-4- February 10. 1456
areas in stereo, without need for continual readjustment of prints or scouting
arms, one must resort to linkages between the arms that in effect position the
perspective point or eatrance pupil of the objective sad over mating objects on
the respective photographs. The scan over the picture area would thou find the
same field reproduced in the two eyepieces, suitable for continual stereoscope
examination. The two photographs would be set up by simple rules along per-
spective lines so that obligee pairing will be automatically followed in the scan.
It should be noted that other linkages might be added later to the same
scanning desk stereoscope to permit stereo-viewing of consecutive pictures on
the same, uncut run of film. Thus, one might adapt the instrument to stereo..
viewing of the charting camera pictures from uncut contact print rolls, where
the picture roll is laid out across the upper side of the desk, transverse to the
center plane. There might be some need to view uncut positive transparencies,
for example, of the A-1 or A-2 configurations, or for any of the films so repro-
duced. In effect, we would be dismounting the individual eyes of the observer,
using one eye over a particular object somewhere on a photograph, and using the
other eye over the IMMO object, somewhere else on another photograph. If a
field rotator is provided for in one arm of the periscope, a complete scanning
system of general purpose nature would become available.
Periscope optics can become very complicated and expensive. There can
be many optical parts in so long a tube, and a great deal of optical design is gest.
orally required. However, here we do not lack for light. Moreover, the oboes,-
or is seated comfortably, and the eyepieces can be designed to cup conveniently
to his eyes in the proper into setting. Consequently, the exit pupil can
be quite small. Waco the instrument is to permit *cantatas, and sine* low powers
are available as well as high, there seems to be no reason to strive for exception-
ally large fields of view.
Thus, if exit pupil and field of view are both restricted to fairly modest
values, the periscopic optics can be considerably simplified. A single erecting
intermediate group might be sufficient for the purpose. The problem is all the
easier if the arms can have an I. D. of about 2 inches or so, or even 1.5 inches.
The objective would than have an entrance pupil not larger than 0.5 inches clear
aperture. The exit pupil at 2 power would then be 0.15 inches clear aperture. At
10 power, it would be 0.050 inches. a value not at all unreasonable in microscope
practice. We almost have in effect a split binocular microscope, where the object..
Hy* end has been widely separated from the eyepieces by intermediate reimaging
optics.
The main body of the desk stereoscope would be in a central supporting
mount of minimum dimensions, from which the arms swing and extend. The vic-
tor* areas on either side and across the top would be relatively usencembered.
The observer can then use overlays, rulers, and other instrameats, pencils, and
the like, without much Interference from metal parts. There would also be a
minimum shadowing on the prints. There would very likely be linkage bars stastebed
horiaontally between the two picture areas, but these would not be large. Perhaps
the gearing and linkages can be done by stool tapes along the arras, as on a drafting
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-5- February 10, 1956
machine.
It is believed that the field rotating adjustment on the right arm might
be indispensable to the observer to take care of plane yaw between exposures and
to complete the scanning system. There might also be a very 'pack adjustment of
one objective to permit resetting of the perspective point over one print with res-
pect to the other, to prevent poor stereo vision where large scans are involved.
The scan might be made, say. 95% automatic, once the prints are adjusted, fol-
lowed by some very easy manual adjustment to improve the stereo, when needed.
Again, it is difficult to predict the total initial cost of a prototype imam.
meat. In production the units should not cost more than $1.000.00 each. I doubt
if they could be much cheaper. considering all that is being built into the en. instru-
ment. The prototype might run to $5,000.00 to snow for good design and geed eels-
struction. The delivery would be of the order of four months from date of anther-
Judea to proceed.
"Weds' 2" would be the same as Modal I. except that certain measuring aids
would be built into the optical train. It would be possible to add a reflex Oa& or
scales that could be brought Into the field of view at the choice of the observer. A
series of scales would be engraved onto a rotating disc at chosen intervals, sack as
1:10.000; 1:20,000; 1:40,000 etc. Then, intermediate scale. woad be obtained is a
continuous sequeoce by a summer arrangement interpolating between one fixed seale
on the disc and the next.
A stop further would be to replace the engraved disc with a circular ver-
sion of Kate' slide rule, or some modification thereof. The observer would then
set basic data onto suitable dials, such as altitude, focal length. oblique angle, plans
speed, and the like. The resulting reflex scale seen in the image fiebi would thou
be correct fey the stated conditions. The design of this slide rule might he some-
what involved, but it is feasible. One might even allow for aaimuthal seal* varia-
tions on the oblique views, such as one encounters either is the usual wily on the
ordinary undistorted oblique, or on the cylindrically distorted oblique of the chart-
ing camera prints.
It may be that a related version of the above proposed scale system will
be an item in a forthcoming Al' contract for another purpose. Clearly, there will
be no overlap in expenses, since all will be under control of the AT cognisance.
The Al' requirements are confined, however, to much larger scales, and the baste
instrument is a good deal simpler.
As to the form of contract contemplated. here arils the best arrangement
may be a cost plus fixed fee, or straight non-profit type, with this writer's persona
time not chargeable to the contract. The delivery time for a Model 2 prototype
would be of the order of six months from date of contract, if a separate instrument
altogether from Model I. While Model 2 might be ordered directly. with Model I
omitted, the longer delivery might be disadvantageous.
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If mere time is available, the contractor would be very pleased. How-
ever. the delivery times in question can be met if subcontracts can be considered
necessary to the performance of the contract.
SPICA would undertake to do the opting and mechanical desist of the hard-
ware described above, but would find it necessary to subcontract the fabrication.
Priorities or premium prices might be necessary to obtain adequate deliveries
from successful bidders on the proposed subcontracts.
It is suggested that details be worked out between Government negotiators
and oar busbies* management along the tentative lines discussed above.
If the contract is to be non-profit, an advanced payment arrangement
would be necessary for successful performance. No large payments would be need-
ed, but SPICA would have to have some relief from tying up fund* needed for remu-
nerative contracts elsewhere. Similarly, in any case some terra of prompt repay-
ment of direct sad supportable costs, and overhead would be necessary for our sac.
cessful performance.
Another form of arraagement suitable to SPICAss needs would be for the
Government to eater into a contract with a larger prime contractor who would then
contract with SPICA for the design and engineering services described above. la
such a case, however. SPICA would eater into the sub-contract involved is a cost
plus fixed fee basis, and the non-profit type of contract would not be considered.
Also, the writer would eater his tire* as a cost factor against such a sub-contract
according to kis practice on other contracts on hand. It would be equally necessary
that prompt reimbursement or advance payments be considered part of such a can-
tract.
It is hoped that negotiations can begin immediately on receipt of this pro-
posal. If extremely prompt action is required on our part, we would respond to ?
telegram of authorisation to proceed, or to a letter, or in accordance with instruc-
tions. Perhaps it would facilitate negotiations if our Executive Vice Presidents
currently cleared through Secret, were requested to submit application for such
extra clearances as may be needed in this and other matters of the *axed nature.
Respectfully submitted,
SPICA. Inc.
James G. Baker
President
JGB/U
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March 21, 141114
Dr. Roderic If. Scott
The Perkin-Elsner Corporatism
Ridgeway Professional Lading
Stamford, Connecticut
Dear Rod:
We have been using the IBM machines so constantly that I have
sot gotten the time to work out detailed proposals. However. this situation
I. clearing up What I shall provide herewith is a quick sketch of what we
hope to do, and thee go ahead in the asset several days with further details
for your more formal proposal to come.
1. A Rectifier for 4) x Ut and 9-iack negatives.
I am lending you herewith a Zeiss Catalog oa aerial photo-
graphic reduction problems. which may be of interest to you. Would you
please return it to me la a few days?
The Read Rectifier referred to several times b is STAT
laid out on a herisontal bed, snaking it perhaps awkward to make rectified
pictures ea large copy prints or negative materials. I prefer the Zeiss ver-
tical arrangement, provided our study does not show that we need to. large a
vertical adjustment which would be uawieldly on that account.
I believe we should provide a coadeaser type of illuatiaatias?
instead of a diffusion light box, as on the Reed. The ceadeasor method toads
to coaserve contrast in the finer detail The condenser might be ihe usual
Haag, which would be very large (20 hakes clear aperture) or might better
be a cylindrical condensing leas pair, mounted on a remain arm, driven by
cam across the negative format at * variable rate to produce even illassisa?
Hoe on the copy. Rectification near the vertical is quite easy, and the
nation is so problem. Rectificatioss of the hietzogpsa high oblbpses is quit. did-
11110subit The Ulusaiaatioa varies by the cosine fourth and the angles are vary
great in the outer field. One can rectify Metier* 00.degree ohlligses to with'
Lw IS degrees of the herisson, but anything mere than that would not be useful
except for coast Hae contours, islaads, sad the like.
The rectifier is to be designed as a stogie stage device, bat
usable as a two stage device also, The single Otago mesas that a reetified
print can be mad, from the original negative ova* at high angles. The two
stage means that the rectification can be divided between two successive photo-
graphic processes and Wastage, a technique that reduces Ike reed hoe wide
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Dr. Roderic M. Scott
-3- March 1.1,
angle leases in the rectifier. However, volume production is dWtcult, and
the work is doubled. In the two stage, you *eight work from a master posi-
tive copy. *adios up in a positive, print or Alm. Eve* in the single stage
device, you might want to start with a copy contact positive, ending up in a
rectified master negative, from which contact prints can be made in quantity.
In say rectifier, the object plea., the image plane and a plane
through a point half-way between the nodal points of the leas perpeadimelar to
the optical ludo all meet ia a carmine* line. about whisk the tilting is to be
accomplished. The intersection in general is virtual, especially tor law tilt
angles. This setup preserves the geometry of perspective. A reetangular
grid en the **Wive projects Late a trapeseidal grid on the tilted image plane;
vice versa, mapping grids ea the terrain will have been imaged in effect on
the tilted taking camera into the inverse trapesoidal grid, whisk after rootlet-
catisa restores to a rectangular grid.
There will also have to be sa azimuthal adjustment to the new-
tive filen holding device, which should take both veil film sad out film. This
adjuotmeat restores the vertical plans through the perspective goatees, prevent-
ing skewing of the projected rectified image. The horisoa, whother es the pima-
graph or virtual, the* becomes a boriesittal line, it the image plasm is bovines-
tel. It can be assumed that the optical anis of the camera is centered in the for-
mat. Hence the vertical plea. referred to above is the plasm of eyamastry el he
rectifier, sad cadet** the optical anis et the rectifying leas.
The itstrogoa 40-degree obliques require a 140.4%re* leas in
the rectifier. My previous wartime work proved that a Hype/goo will do this
job very nicely. However, we can retain more resolution if we drop beck to
two stage rectifying for these high eagles. and use a leas a mai?, flag. NI
90 degrees, of about f/14 instead of If K. as for tbai HYPErlioa? In general, uk?
rectifying lenses will be designed at VII to f/I4 to preserve diffraction resolu-
tion. They will be designed to have the same 'distertioa residents as on the
original negatives, insofar as practicable. I would do this oaly for the special
34 and 36-Lack leases I have designed, and les the C?systesn. The basking
plate* will have to be curved La similar fashion, as in the original camers, or
perhaps I can calculate the distortion curve for the film hold on a flat plate*.
The projection throw ler the i-iach Metrogoae? and the *4 lash
1/ los can be accommodated es a vertical stand with large horisental *evil. The
easel should accommodate cut film, cut printing paper, or have adapters foe
holding rolls of prints or rolls of film of large sine with light protection. The
rectified formats are larger than the original and for high oblinues, a great
deal larger. Hence, the easel will be large. and mous will have to be provided
to hold di* prints or film flat. At high angles small departures from ftalness
affect the rectification seriously. Conversely. small deviations on the easel
can be used to 'limiest, distortion residuals, *spatially throe dest chow rapid-
ly in sinusoidal or other form across the pietas. Vie might Oink in toms of
having an easel table built specially for elimination of the distortion not other-
wise eliminated in the projection leas.
The projection throw for the 34-lach might still be done diteettly,
but the distance along the optical aids would already then be ele foot between
negative format and printing surface. The leas would have a focal leas* pro-
ducing a vertical scale in the copy, which Ikea is constant over the eery.
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Dr. Roderic M. Scott
March 2A, 19114
equivaleat to what the original lens would have taken of the 'artful if not in
the oblique position. Thus, the 3?inch tilted at $0 degrees, say, photo-
graphs ? reduced Ma. compered to whet it obtains ea the vertical views.
The rectifier, however, can rectify out to the sans. vertical scale, but for
the distant terrain, viewed obliquely. There is therefore ealsagemeat. which
can be considerable at high asOes. iteryead TO degrees it is sails. useful,
and of cours.? at the herisoa the enlargement is infinite. Om east produce
partial rectification, however* and obtain the keelson.
Variations in elevatioa of terrain will muse the reedited images
to lie in rectified planes. shifted with respect to one another, socording to the
elevation. Distant eamataias will be "pushed" outwards when rectified.
As far as the rectifier is concerned. I think we should NM* up
with sessetielag of amagineens convenience for the operator with respect to film
kaadling, marking, illueniaatien control, focusing. etc. It will be quite ?
large device, particularly if we include the Cr-system with its king food length.
We would have to fold up the projection Shrew with mirrors to keep the system
compact.
Perhaps we should arrange the design to accommodate the 4,
24 and 34.inch pictures on me rectifier with interchangeable projeeties leases,
sad have mother mounting for the C-systene. Iler film holders, and easel
might be identical, and even interchangeable between the two mounts, bat C
might have its owe Illumination system. The odd filen sine might make it
desirable to have its owe film holder, too.
1. Cost of a design study. At this juncture I would eetisaste that
SPICA amid complete a technical study of whet is required for about ND NC 00
worth of time, ending up ia a detailed report The study orindAl be dens -
daily by me, partially by my mathematiciaa. and by asTAT
new tam I expect to obtain shortly, who is also a ma dm. I would get
together pertinent Information from existing literature, and de whatever is
necessary to plan a rectifier for the above purposes. This would be a fined-
price estimate, including all costs and 'milts A more lama foto. and brash.
dews would be provided in a proposal more carefully molted out.
3. SPICA would undertake to design the optics, bet leave !skim-
tioa and eagineeriag of the mount to Porkin-ZIalsor. The design vould aim
include adaptation to seat as required. It appears that them leases are all
around fill to OM, involve quite wide angles and precision resolution, with
minimum and controlled distortion residuals, but are net critical to color tor-
rootlet. We can um specified light sources and filters to restrict the ales
masa. At the present moment I would given round figure of $000 each for
the cost of the optical toady" for leases for the 4-1nish, 144446, 344asit and
1104ack throws. Each design would permit single stage reoligloallan up to 40
degrees and two stage up to TO degrees, or eves TS if I ma de it.
4. The cost surveillance a design asal mastraotion. I would esti-
mate this tentatively at $1, 000, which would include trarl and conference time.
Thus, if the full program above is planned, the tentetive prim
would comae to $30, 000.00. It would be carried out rather quickly as mess as
a green light is given contractually. I think th. study could be sesspIetod in
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Dr. Roderic ht. Scott -4- Marsh 2/. ISM
tW/0 0001060 tiara% the go ahead. sad the optical desiips would fallow is serne
preferred order at the rate it about one dards* per assenth. This mesas
everything would be completed La sin months from date el cootraet. I thigh
we might proceed snore quickly if the urgency dessaaded it.
A more easeful proposal sad price breakdown 'will be forth..
coming soon.
? ? ? ? ? ? ? ? ? 0 ? ? ?
S. The Charting Camera Rectifiers
1 Wats the desiip study would in this case include the optical
desiga. suck as it is. I have La submit a single stage device. where the
sal aegative paaoransic film is wound across a spherical back*" surface,
which is traamparent, through which condeaser illimaination is previded.
Omits possibly I would use a beam splitter across the short width of the Silas
to separate out the film, platen and condeaser from the Mersin light fres
the primary spherical mbar.
The rectifier would cesurist of a Schsaidt typo setup with spheri.
cal primary, the platers sad beam splitter above, end a special less at the sea.
ter of sureature, costalatag a shutter. Tbs special leas will have to have a
121141egree flat field free distostion, but can operate at fill to Va. There
might well have tor be a torts field-Ilatterser sad distortios albninator at the
negative film spherical surface to take out the diaereses betwees the fiebtaidt
typo focal surface sad the original cytiadrical type food surface of the peso-
ramie 'weep.
The easel la this case will have to costaia the asinautkal and
tilt correetteas that may be required, is ease the passortasuic sweep has beers
takers fors or aft of the vertical tumidly:rite please.
SPICA would undertake the design study and optical design for
a price of $10, 000. A 1101101e detailed cost breakdowns will kilo,' sad the price
may come out to be lower. However, following through all the details of the
rectifying process of the cylindrical aegatives, iastuding pleas narovernente,
compressioa of scale cause by roll. etc.. might cemplisate the wuh out of
the optimum rectified copies. lie might have to sot up MU progng for
uneyeansetrical torte surfaces, sad the like. I des% want to get laW a time
sonsuasiag bind. Our price includes overhead, which at present is runaing at
00 of direct labor.
It is contemplated that the original negative roll will be used ea
She rectifter. The output would coastal of rectified strips, framed to be wee-
tau/solar, rather thea fusing etas although that would be permitted. if desired,
but uses Mar* film sad is redundant. The ropy film or print roll world be
about ZS Inches wide. Where the *Astral pictures are end to sad along the
relit the copy pictures are side by side alms the wider well. (As is the pre-
posed Easiness coatact printer).
It would be passible to obtaia partial reslifieatioa of the harioess
by tilting the easel. sliding the film horisoa image over to the suds it the
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Dr. Itederie id. Scott March Xis 1914
rectifying system sad focusing for proper conjugates. Doe might rectify
the 40 to plus 40 sweep, and add in a partial rectification on either side
of the 40 to karts** strips.
Delivery time on the proposed *Indy and desip above
would roast *beat six mentbs from date at contract.
C. Ste TeeeVie?Vialp
I am eatclosiag a copy of the proposals made some time
age directly t* I have heard that some action has bee* Saban to STAT
get funds, bat have no direct word. *sate, you can take over these pre.
pawls sad SPICA will not deal directly ota these items. unless you foil to
get the backing for sane reason.
SPICA would undertake is provide a detailed description
of the printer light table, and stereoscopes, incivAing pertinent drawing*,
for a price of $4. 000.00. but would not undertake to engiaear the printer or
light table. SPICA would provide a rather geed meek.up of 6111 lagbik UM.
halt whisk Perkin.Xlmer might carry ..i* the *stag streenad model
to be provided the customer. The cost at this rsock.up would lasted* the
drafting time and outside labor and materials, and would yea is. Mont. $164112.211.
SPICA. con undertake to preside ax. 41 sad ML sto elm"
scopes for *Se with the light table and semi. The three stereoscopes would
be quickly interchangeable and would rest en a small carriage slidiag back
and forth *leas the overlapping viewing area. with the proper fesuidas elbowed
for.
The coaception is that the printer will eseakine the initial
aegative frames at odd asinauthe with respect is drift este copy films as pest.
Uwe transparencies, with the plane drift, at least few the aresieverse digestion,
used up aloes the directioa of wiad oak* film copy, with a dispiaartiat as
may be required is keep designated objects on successive picture* equidisitat
from the *ides of the copy MI. Two identical copy Alms are repLied. These
are spooled in reduced lugths and put sato the light table, threaded lake a sea.
tral got onto take.up epWs. Thereafter. sterso.objecte4an be brayht 5.
the vicinity of the central strip area, which is about Z. lashes voids by up is
20 lashes layi. The slit rens up sad down in front of the observer at the easel.
The please of the easel can be tilted frau herisental is 10 degrees far sossiert.
The stereoscope elides up end dews. lectures, sad baa a* asionahal
to take care of errors in the copy work or of oblique slanting psiepsetiwe lines.
In this way all *Vette can be seen in stereo with the staadard stereessepes
aminfortably. The weak is divided between an *visual teehaisian who marks
the drift directien ea the negative, sad displecesseet, if amyl a dash roam
worker who puts the **sett". in the printer aumd who makes up apo idealise*
copies en positive film with the drift Used up properly; and a group of photo-
interpreters equipped with easels and stereoscope*.
The 21 and 41 Stereoscopes in mall predestion will west
about $4.210. 00 each. The 101 will be smaller and simpler, but will have to be
designed and built in prototype form. The first ate would seat almost #/14 100
but subseqsent ones would *est about $400.00 each. The AX se* be said eon-
veniently on stereo-prints, bevies foidiag legs, focusing sad interpupillary
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Dr. Roderic M. Scott -9- Marsh fl, 1914
adjustineat. The 4X can be used in this way also, but is better used on
positive transparencies, suing to a short workbag &steam. It too has
Maas lege, issterrapillary adjustment and focusing. The 10X will be
mounted more simply, but will have iaterripillary adjustmeat and fosse.
lag ales. All three. fits lege folded, can be placed sato the earriage moo.
tinned above that slides up sad down alms the viewing area.
We have already made quite a bit of progress ea the Wit
bible and easel design. Shertly, an isometric view will be made WINIMANA
to you that will serve to indicate to the customer whet we have in sail* er
at Inst, it will kelp your own draftsman to prepare new drawings with cuta-
ways for proposal purpose*.
Thus, the work referred to above comes to about 99.4110.0
with delivery in three month* from date of contract. We have as isterest
In designing the details a the special darkrooms printer, but will maks ?
study of all the pertinent details *ad submit a report with restemeseadatiess.
7. Desk Stereoscopes
This is ? rather ambitious item and we have already onpent-
ed some time as it. I have held up ea any further work. ones I hove not heard
from The general ideals covered in the acemapenylag STAT
However, we have progressed farther and have a good idea of the nature of
the periscopes required, the pantographic
SPICA *gen would provide a design study. and the opting
design complete for the periecopes sad magnifiers. We siould also partial.
pasts in surveillance and follow-through to guarantee anseeseofal
This &newsmen, if made fully conrorenient, may become a very
with phote-taterproters, and I suggest that we go atter it very IksrSughly. It
tavol'es a nice little computer, some mockusical linkages, ampler drives,
roues and fine settings, powers from IX to lox. As described to the enema.
paaying write-up, we have planned to view up to SO at 20.4nesh formate,
lag for the widest films we might contemplate observiag. saes as two of our
stripe of 9-took films adjacent, or rectified prints of large sine. iroastilled
positives and the like.
The design; study would not be a complete one, simeamar
engineers will want to have a real head to designing all Ilse linkages
bearings. However, we would give it all we could. from *Mak point yea amid
take over. Muck could be dem ia contereaces.
SPICA will undertake the design study. Including the opting
Auriga, for $10, 000, eliding in a technical report with drawings. The dun*
veilleace would cense to *mother $t. 000, resulting in a total price of $uilase.
A breakdown will fellow. In the accompanying warite.sp. I ameaties $S. 000 ier
prototype. The instrument now seems more emapliested is me, sad with
overhead, profit, 0 & A. etc., may be mock more. I also mitten a pew.
duties mot at $1,000.00 In molest quantities. I mew Walk it will he musk
more. However, the Instrument has great merit, sad has seem quantitative
features as well. Delivery would be la six mouths Irma date of esmitrast.
1. Night Photography;
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Dr. Roderic M. Scott -7-
March n, 1926
SPICA would undertake to provide a design ftudy, ins's&
ins optical desisa for $1, 0410.00. SPICA would also lead earrelilasse time,
conference work, field work, and follow-through for $4, ON. OS. vadat
includes cost of travel, *ad travel time.
As far asl can tell at the present moment the systems
will be an elaborated form of the 2-mirror Schmidt. employing swim
'active optics, *spheric mirrors and correetiag plates. The system would
work at f/1 and have a tester of at least fit. S. Color correctioa, if different
from bill mirror correction, will still permit use from blue to deep red.
The system will have a SO-inch focal length. and would take
night pictures as a 9 x 9 format for at least the iscluded circle* and hope.
fully for the 1 x 1 full format. I have visited Polaroid and it aeons serials
that we can take pictures without saew cover within plus or minas two days
of full mama with exposure times not exceeding 15 seconds. Gator ideal sans
dittoes with snow cover and full moo* in dead *tater In high latitudes, the
exposure time might be as short as 0.3 **coeds. The properly exposed mesa-
light pictures amour hardly distinguishable from daytime rioters*.
The two-mirror system will be to designed as to have the
format behind the primary mirror back asid cell is as accessible position.
Sufficieat baffling will be designed into the system to eliminate stray light.
The *spheric surface, Will be quite deep because of the need for compact
deities There might be as many as tour *spheric atria.** quite ressote
even from comics to be made precisely.
14. set like to separate the optical desiga from the doe*
study, since they are too closely intertwined. It would do so good to propose
an optical system, and thee later to lied that it does net work well esoligh.
Delivery would be wattle ten months after date of contract.
Generally speaking the terms and cesditioas at the sestraet
we propose will fellow the patters established uades Perlda4C/maer Pomba**
Order No. 57504 sad/ or those terms customarily included is a fined prise
subcontract seder a Government prime *attract.
Patent and copyright articles used will of course reserve
to SPICA all cosuszercial rights and will be equal to those sweated by Ike
Government to Perkia.Elmer. SPICA does not propose to Waist asy retests
or copyrights which are die result of general research not spesitioally attrib-
utable to this contract even though developed or first reduced is writing during
the period of this contract.
Any specific requirements sack as lasersate es Government
property or Perkin-Elmer property furnished SPICA will increase the total
price or be subject to negotiations at the time such roodroment is established.
SPICA would like to submit 'moodily invoices up to WM olf
the contract price for work accomplished. Payment is to be within a de
nated period of time thereafter, at the order of tea days with a discoust of
1/ 211. The remaining 1091 can be withheld readies satisfaction .1 .11 costraet
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