PROJECT GEMINI

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP63-00313A000600170011-6
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 2
• Document Creation Date: December 12, 2016
• Document Release Date: August 14, 2002
• Sequence Number: 11
• Publication Date: May 1, 1961
• Content Type: MF

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Approved For Release 2002/08/28 : CIA-RDP63-00313A000600170011-6
14 000737040
COR-1134-
Copy No. 7r of 3 copies
I May 156
NRO REVIEW COMPLETED
SUBJECT:
=WEE
UPD-Litt/P
me for a decieion on the configuration of the convergen
becomes critical, ve feel that we Should reaffirm our desire
incorporation of specific copponenta Which mill materially assist
users of the film in our analyses.
trona,' suggest that the camera package for this Prove/she
the same type of clock as is being used for the AMON Program.
ion for this position is quite similar to the one vhich me
uarr for the Ow Program. Our understanding is that this
on would have been sufficient for incorporation of the ABM
o the CT" Program except for the feat that time did not permit.
on is doUhly enhanced by virtue of the fact that the current
miserably during the last CORM operation and that, from
records, the "A" clock worked perfectly over a four-day
error of 1/100 of a second during the last "A" Idiot. We
orporation of a reliable, accurate clack as absolutely emcee-
complete exploitation of satellite photography. Such s. cloak
considered as an integral part of the photographic collection system
just a desirable component. This is particularly necessary mben
ruing ourselves with a non-synchronised convergent stereo photo
tem We feel also that the addition of Autometrie binary reading
equipment at the processing site will be a valuable addition to the Program
can be provided on-the-spot reading' shortly after processing
control tape in order that their flexowriter titling eqpipment
numeric timing information with the standard titling data.
2 Prom the information we have been able to gather, it is WIC';
that the addition of a separate vertical reference framing *imam
de valuable additional information for photogrammetric analysis
camera's photography if such an additional camera can be
thout jeopardizing theprime function of the C" 'g package
most iemediately apparent benefits are:
A geometric comparison between Obliqae panorama.c images an
the orthographic geometry of the vertical firing camera.
feel that this is particularly beneficial because the main
Approved For Release 2002/08/28 : CIA-RDP63-00313A000600170011-6
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cameras are being designed to use SO 132 film *doh, because
of its extremely slow ASA rating, will require exposures with
an equivalent time of about 1/200 of a second. It is our
understanding that the vertical cameras will use SO 3.188 film
Or its equivalent vhich will permit exposures OA the order of
1/500 of a second under similar lighting conditions.
With a le focal length using TO film, we should get coverage
of about equal to the width of a panoramic sweep at a scale
on the order of 1:6,500,000. This, by a happy coincidence, is
about the some scale Vhich we vill be realizing tram the "A"
Program and should provide very useful correlation material
with the "A" photography.
The vide angle, short focal bmagth;AmitogrePhy should provide
excellent intonation for the Air Weather Service whereas 'we
will have no photographic rectification capability for the
oblique panoramic pictures.
We feel that we can Obtain equally good or better attitude
information for the standard horizon exposures, even if oblique,
as we could from the vertical framing terrain camera pictures.
Therefore, we do not regard incorporation of this additional
camera as being nandatcmybut rather as a device which will
provide quite valuable additional information.
It is suggested that consideration possibly be given to mounting
this same auxiliary camera to provide stellar exposures rather
than terrain exposures. The stars provide an excellent control
system for the accurate determination of camera orientation
(pitch, roll and pro). The present technique of horizon re-
duction could be continued, with the stellar camera providing an
exposure every tenth frame of the panoramic cameras, which would
allow the graphs of the horizon determined.Atch and roll to be
adjusted. I stated recently thatI
will soon be possible and that accurate
time will soon be ava.tisnle, hich means that we must provide
better orientation data or this will be the weak link in the
system. For these purposes, time would have to be provided for
each stellar exposure. However, readout could be made compatible
for the techniques developed for AMON, the Freeekenatein and
computer programs are already available.
Chief, riat
National Photographic Interpretation Center
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