MODEL 552 TRANSFER DEVICE AND THE ASSOCIATED 552A STEREO VIEWER

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002900040035-9
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: November 25, 2002
• Sequence Number: 35
• Publication Date: November 19, 1964
• Content Type: MFR

19 November 1964
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MEMORANDUM FOR THE RECORD
PLACE
DATE
ATTENDEES
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. 29 October 1964
SUBJECT Model 552 Transfer Device and the Associated
552A Stereo Viewer
1. The primary purpose of this trip was to determine if the 552A
Viewer was ready for pre-delivery inspection. It was not! Nevertheless,
the viewer was almost fully assembled and we were able to make a number
of basic operational tests with the instrument. In general, the viewer
looks good but it is a fantastically complex piece of equipment and has
a great deal of "debugging" and "tuning" to be done. The following is
a detailed list of discrepancies noticed on the 552A viewer.
a. The inner pupiliary adjustment needs a fine motion
screw for adjustment. The ports through which the inner
pupiliary scale numbers are viewed are covered up at
certain settings. The masking is incomplete between the
eyepieces when the eyepieces are in certain positions.
b. The present head rest interfers with the inner-
pupiliary setting; in addition, an ambient light shield
is required.
c. The reticle is out of focus; it shows flare and color;
furthermore, it has a half-moon appearance. A diffuser
would help.
d. A larger crank is required on the angular attitude
motion.
Declass Review by
NIMA/DOD
GROUP i
Excluded from autnmatlc
and
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CONFIDENTIAL
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e. The image rotation is eccentric.
f. The fiber bundles are not properly aligned with the
apertures of the right and left eyepieces
g. Some of the objective lenses apparently are either
not par focal or out of focus.
h. The control panel has not been tilted as was requested.
claims that this cannot be done due to costs.
We must take this up with
i. The intensity, as exhibited over the entire exit pupil,
is not uniform and the high intensity light source is not
operating anywhere close to the correct color temperature.
j. The X and Y stepping motor drives are not correct yet
and the two-speed drive has not yet been installed. There
are a number of inconsistencies on both drive channels.
k. There is a very bad growling sound in the Y stepping mode
of the left channel. The 6X eyepieces seem to be an improve-
ment over the 4X eyepieces; however, they do increase the
curvature of field.
1. The approximate magnification ranges with the 4.5X eye
lenses are as follows: (These are theoretical values only).
a. 1.33 through 5.77
b. 3.50 through 1150
c. 9.10 through 39.0
d. 28.0 through 120.0
m. Ghost reticles appear in both optical trains.
n. The zoom motions have a tendency to drift after the
control switch has been released..
o. The channels do not track each other properly even
when the "couple" switch is engaged.
p. There is objectional curvature of field with the low
power objectives.
q. At various settings the center of the field hasn't the
same plain of focus as the edges.
r. There is unacceptable "chattering" in both X and Y axis
as the photographic image is scanned.
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s. It is impossible to see through the edge of the
present plastic vacuum manifolds.
t. There is dirt in the optical paths.
u. There are a number of dead spots related to
the joystick control motions.
v. The vacuum holddown on the left glass plate some-
times fails.
w. It is not possible to feed both films through the
loop handling system at one time; one side is always
braked; and the loop is formed much too slowly.
x. Two if the objectives are not easily focused.
y. The front, left hand, vacuum manifold leaks.
z. The insides of the occular lens tubes need coating
in order to reduce interior reflections.
2. We are leaving two rolls of 70mm film and two rolls of 5" film
on a temporary loan basis.
3. Another monitoring trip is contemplated for the 23rd of November.
This trip is to assure ourselves that the discrepancies (noted above) have
all been corrected. When we feel that the instrument is truly ready for
inspection, a pre-delivery inspection trip will be made. At this time
the operational components will be requested to send along representatives.
4. Although there are a number of problems to be worked out preliminary
investigations indicate that this instrument, when completed, will have a
capability and versatility far in excess of anything else now available.
5. Examples of the marks made with our laser point marking system were
given to us byl and will be included along with this report for
information purposes.
6. has requested that we provide them with examples
of different photographic materials that we may wish to mark with a laser
beam. These samples will be given to on our next monitoring
trip.
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7. It appears that this instrument has an actual capability in
access of 600 1/mm resolution; however, an improved target, superior
to those now available will be required in order for us to prove it.
We currently are trying to obtain such a target.
25X1
Development Branch, PUS
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