MONITOR DEVELOPMENT OF THE VERSATILE, HIGH PRECISION STEREO VIEWER(Sanitized) MODEL 552A)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002900040047-6
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: November 25, 2002
• Sequence Number: 47
• Publication Date: December 11, 1963
• Content Type: REPORT

STAT
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DATR:
HAM
SUBJ; Maitor Development of the Versatile, Righ Precision Stereo Viewer
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nate: 12/11/63
Nokastaek,
9 1963
ZILLULTION
IINCla
113/1,41*-11/19/63
DZSCUSSI :
STAT
STAT I. At the outset, requested certain additions to each of the company
progress reports. All were acceded to by They are as follows: STA
e. Change to monthly progress reports instead of the present bi-monthly
uirecy .
b. A Irilestone method of indicating progress in relation to the overall
STAT job. says thifs"running behind at the moment.)"
c. A mouthIy financial statement indicating amount and percentage of actual
and obliiat.d expenditures.
d. Documentation of all conference agreements.
2. Relative to the Last item above, several subjects, bhich had been discussed
during the previous visit to the plant, were cited as not being documented in the
first Contractor Progress Report. These questions with clarifications are as
follows;
ii. The designobjective temperature maximum of IOC? above ambient at the film
plane was revised to 300 above ambient agreed to this, but with STA
some hesitancy. This writer has some doubt about their achieving this since the
*WIC viewer (Model 387) produced a maximum temperature of 119? (from an approx.
ambient of 72?) and has a less complicated condenser.
Declass Review by
NIMA/DOD
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or description demonstrating the comparator potential of this
modifications was requested. In response submits the enclosed
Srieflis I I proposes to change the screw drives
ovide magnetic type encoders, i-T axis counters, nixie tube displays, On-Off
met switches. This system would have a digit bit aisle of 2% action*
if accuracy of 5 nicrons plus .01% of distance travelled. This die..
slf.interest because Navy's model of the viewer will have a measuring
ty. I stated that a system utilixing the present screw drives would
a bit sine of 10 microns, which satisfies MAVPIC's requirements.
binocular monoscopic viewing capability in either eye channel was
requested. A design utilising a movable beawsplitter was exhibited to provide
such flexibility
d. Documentation was requested concerning the correlation between scan drive
speed of each objective assembly with magnification change and dessimilar settings,
Such documentation will be provided in the next progress report.
e. A statement in the lest progress report describing an excess film loop
of 16 feet was questioned. Ixamination of the engineering drawings indicate that
this loop from center-of-format to center-of-format (split light table) will be
19 feet.
f. Documentation was requested that the high intensity illumination would
have a minimum color temperature of 3500?S with no "yellowing" of the light down
to 50% intensity. Finally, this light source must correlate with each objective
leas (4) by corresponding interchange of condenser lenses. The next contractors
report will certify these points.
demonstrated a breadboard of the planned vacuum system for film
hold-down. it consists of two thin metal strips with slight channels on their
under-surfaces rubber-lined flanges extending over the film edge, and plastic
tubing through which the air is exhausted at one end of each strip by moans of a
single compression pump. The front strip is fixed and the roar strip can be moved
back and forth over the Microgroove material of the light box to accommodate
various width films. During film transport the pump action is reversed and air is
blown under the film causing an arcing or "rounding" of the film, so slightly,
however, that the two film edges remain beneath the strips. This later character-
istic is intended to insure rapid actuation of the vacuum whether the film is loaded
emulsion up or down. Two major objections were expressed as follows (with related
discussion);
a.
tfidlia
contact w_
STAT bands- Therefore,
ilm dema o the
It was agreed t the strips mist remain in
for rapid vacuum actuation without supplementary use of the
will try to use * smoother lining material.
it he film ed du
'nti catiaa. No procedure olvin
tensile because of the rapid actuation requirement
.clearance between the high power objective and the
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=feces. (IlmesT_21211:l th
ives can pass over the strips. Since
t be visible, 11 try to fabricate e vecuum strips from
response to a request they will attempt to provide a vacuum
SO OW the compressor could be turned off for vibration-free
inst viewing without lose of vacuum.
4 states that the adjustable "dot" reticle (V4 of arc) will
met be round. They bmwe been able to find only one type of iris *butter which
closes tight *sough. This has six leaves and produces * aerated edge. Hr.
is insisting that the eccentricity be no more than not the dot radius.
5. The its. end location of the objective lenses will result in a Waive= 1 3/16"
center'to'centar dietaries' instead of the 1" design objective. This is the same as
en theMisdel 387 at MIMIC *mod is acceptable; however, it is t firm requirement.
6. An elapsed-tine meter will be included to facilitate =internam. sdhedules.
7. Ceasideration will be given to providing exterior handles attached directly
to the frame to facilitate safe movement of the iustrument.
B. The frame *lone will weigh /600 lbs. and the total weight of the instrument
will be 2300 lbs., approximately.
9. IMPFICse experience with the RapidIII1 Screening Viewer was cited in
recommumlieg sufficient retraction of the leveling jack legs to avoid their
damp during movement of the viewer on and off the elevator and over uneven
surfaces. They will give us the maxima possible: 1" - Ii' above the floor when
rolling on the casters. This may be adequate; however, a question exists as to
the adequacy of the integral vibration isolator* selected. If a more mmasive
type were necessary, the A" would be severely reduced or separate isolators, with
attendant leveling problems, might be required.
STAT 10. it was stated by
cancelled.
STAT
SAT
nom.
that the requirement to handle 35Af11e hoe been
U. The eroding of the r Lay contacts on
problem to be Lnaurcd against in the new
63 their estimate for repair and general
President. Hopefully
HAVVIC's Model 387 viewer was cited as a
development. /mcidently, as of 19 Nev.
overhaul of our viewer had net reached
we can be expecting it soon.
XASiaparinS drawings of the exterior and interior of the eyepiece aseembly were
examined and discussed. to addition to the usual interpupillary adjustment,
eeseeets will be provided for varying the two eye/ens optical axes from parallel
to a slight "toe-in." Several control knobs will be on the face of the assembly.
It is expected that the boat probieme with the existing rotation discs will be
avoided in the redesign of the edjuittment control. It we. requested of that
they consider methods of shielding ambient light around the eye-lenses somewhat
like the approach
3. Considerable discussion revolved around the control panel/work shelf.
sageested that we may prefer a single detachable unit which could be rotated 1.90jL
(eod-Pforeemd) to provide the right-and left-handed control panel positioning
required. This would necessitate switching the film drive handles also. Por this
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was decided to retain the separate caster-mounted control
could be sted" in the permanent work shelf in right or
s console will contain the electronic circuitry and con-
stick mechanism and other controls. In addition, a separate
proofed cabinet will contain the vacuum system compress=
se-and vibration-producing equipment.
ACT 14. In dis *posed use of a "sleeve" fine tuning control
em the joystick 1 the fairly accurate" logic which will he built in
fez' maintaining stereo during scanning operations on materials with differential
owing (or yaw) and differential scabs (requiring different masnification in each
optical path). It ems decided that the operetor's eye accommodation and the
existing thumb type of scan channel selection were sufficient and the "sleeve"
control not necessary. Convereation with the Nadel 387 operators at HAVPIc since,
imdicates that there is some considerable eye strain with the existing equipment
during a scan operation. However, it must be remembered that Nadel 387 does not
have the differential logic which wit' be included on the 532A. A change which
lleuested is the design of a saddle" thumb *witch for LUT, BOTH or RIGHT
1 selection.
SiAT
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CCIICLUSIONS;
1. Work psrZor4 in the five weeks since the last plant visit indicates some
concrete prowess On the part of lend some distinct pc lee areas
concerning the v*ctua system, the dot reticle, and types of relays to be used.
Some "grey" areas to be watched include documentation of conference agreements,
temperature bultd-up at the film plan*. miaimum center-to-center distance between
*twee objectives, and selection and location of the vibration isolators.
ed questions considerable confidence is held concerningSTA
to resolve all significant preblems of design and fabrication.
Vary respectfully,
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