COMMENTS ON(Sanitized) MICROSCOPE PROPOSAL

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002300080009-0
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: December 3, 2001
• Sequence Number: 9
• Publication Date: December 27, 1966
• Content Type: MF

S
Approved For Release 2002/01/02 : CIA-RDP781304747A002300080009-0
laBICSIODOX FOR:
ATTENTION:
SUBJECT:
Assistant for Technical Develacment, *PIC
Comments on
Mi
Proposal
nrofteisM-188-66
27 December 1966
1. The 144:titled Micrwiftereoscope and dnocularMicre-k
scope Contract Design Phase 14 has been reviewed and the follow-
ing comments are o rded for your consideration.
a. The field of view of this microstereosoo Imicroacope is
smaller than the field of Titre oftheillpecei 70. This is a
serious reduction in siva coverage. must be realized that the
larger the field the more information the PI can obtain from a
single stereo or mono examination of imagery.
b. On page 18 it is stated that at the 4 licce position there
ri.on
will be slight spberochromatime and domizemt secondary color;
at the 2X zoom a secondary chromatic aberra is dominant
and at 11 zoom the secondary chromatic at* tion is far larger
than the spherical abermktion. On page 19 i is stated that
lateral color is completely removed by the hyperchromatic
field lens. On page 14 heakever, the Field la= is stated as
having a capability for correction of feall, residual lateral
color resulting from the Zoom system. These statements seem
incompatible considering the varying degrees of chromatic
aberrations present at the different zoom settings.
c. The resolution figures on page 20 indicate the IX zoom position
to have very poor resolution at the 0.7 and 1.0 field positions
in comparison to other objective and zoom settings - for similar
magnifications. Since the IX soon wc4ald be used initially during
scanning to a greater wActent than the 2X or lial zoom combinations;
better resolution than the 2X or IkX zoom 'would be even more
desirable.
Declass Review by NIMA / DoD
Approved For Release 2002/01/02 : CIA-RDP78604747A002300080009-0
25X1
25X1
25X1
25X1
?
Approved For Release 2002/01/02 : CIA-RDP78604747A002300080009-0
80PaCT: Comments 0011111111Mi renma
erosoOps Pm l
2. Com
designed
is forthc
25X1A
son of the 2K rholbotd/roma 70 combination and the newly
indicates that no great advantage in reeolution capability 25X1A
a. It is assumed that the better the reso
bility available to PAG, the better the pos
and timely photographic interpretation.
contrast oaPe-
ty for accurate ILLEGIB
1. The resolving power of an individual' ee can reaeh 10
line pairs per millimeter at high contrast, with the average
approximately six lines per millimeter; the specifications for
the ontrect state five line pairs Per millimeter as
an objective - on axis, or less than the Merage individual
is capable of seeing. Why would it not be possible to ad-
vance the "state of the art" and produce sOmething better
than What is presently 00Otemp1ated?
2. PAG has not had a fine commitment frasany source stating
what resolution/contrast capabilities are actually required
to facilitate interpretation of imagery.
b. TheZccen 70 has been in use for approximately
ten years. This Instrument has been improved to provide better
resolution by developing RI and advanced ids which will
conceivably raise the resolution to 2 ? r mi
ILLEGIB
25X1A
is the opinion of the Photographic AnalysislOroup that the
glellsign should be improved by using speeificatione that would be
Eute with improvement of the state-of-the-art eSpecially where,
resolution/contrast values are concerned. Since the equipment used to
measure the modulation transfer function of steraseopes will provide on
axis and field angle responases it is requested that the Zoom 70/2X
Approved For Release 2002/01/62-:t1A-RDP78B04747A002300080009-0
25X1A
25X1A
25X1A
1
- Approved For Release 2002/01/02 : CIA-RDP78604747A002300080009-0
SaINTSCT: Comments on=lielveeoPe Pro
rhomboid
the proposed
develowent
that 'will result
or other avai3ab1e microscope bB compared to
ign. This information will then enable
design of the or any otter microscope
in a unit superior squisraent.
Distribution:
Orig & 1 - Addresses
1
1
1 - Chr000
Approved For Release 2002/01/02 : CI4-RDP781304747A002300080009-0
25X1A
25X1A
25X1A
25X1A
25X1A
STATINTL Approved For Release 2002/01/02 : CIA-RDP78604747A002300080009-0
Approved For Release 2002/01/02 : CIA-RDP78604747A002300080009-0