STELLAR COMPARATOR

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A001000060034-4
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: May 22, 2001
• Sequence Number: 34
• Publication Date: April 27, 1964
• Content Type: REPORT

Approved For Release 2007/07/25: CIA-RDP78BO4747AO01000060034-4
STATI NTL
STATI NTL
STATI NTL
STATI NTL
Stellar Compar to
and I visited
to get some background in ormatio
of a laser as the measuring device
r
stellar comparator. LJe talked fo
Senior Staff S
.Director; and
resonance features impevtant to the interf
piques used in the measuring devices. Int
sensitive business and needs precise adjus
cientist;
in the
Lab in
on the use
reviewed some of the fundame
Spectra Physics lasers with particular ref
had fewer sidebands.
produces insufficient stimulation to excit
The use of the short 13 inch laser was pro
by reducing the intensity of the laser be
suppressed if possible. This can often be
slightly different wavelength. The sideba
produce noise on the interference bands an
but will also resonate at sidebands which
resonate at its principal mode at a precis
pointed. out that a laser wil
across the laser beam.
on the laser to obtain full spatia
as practical improvements in the use of th
1. Carefully adjust the hemispher
suggested four things which
2, Reduce the intensity
mum usable value in an at
side bands.
3. Use a high pass filte
circuit to eliminate the
tions introduced by the p
4. Move the laser back and forth
path to insure that 10 inch measur
centered in the most sensitive por
STATI NTL
The people atl were
considered the concepts in the us
wring tool to be sound. Of cours
inion on the detail execution.
Declass Review by NIMA / DoD
talc of the
rence to the
rometry tech-
ferometry is
ent to worke
not only
wavelength,
ave a very
ds in effect
should be
accomplished
This
the sidebandso
er since it
ould be done
laser:
cal resonator
coherence
long the light
ng travel was
ion of the beam.
STATI NTL
STATI NTL
Approved For Release 2007/07/25: CIA-RDP78BO4747AO01000060034-4
 Stella Co par a or
the circuitry.
had a good measuring device.
year and a half or more experience with Lasers and has
done some measuring work with them. He e provide some
backgroung information on their life, stability and
Anything that throws static or a transient
that other such devices suffer from, parti
pends upon counting fringes as the measuri
and is therefore subject to all the ills i
wavelength of the light and not on the acc
which a pattern is made. its dependabilit
device once it is perfected. Its accuracy
simple. Its simplicity should make it an
immediate delivery was one of its attracri
The Laser measuring principle is straightf
Approved For Release 2007/07/25: CIA-RDP78B04747A001000060034-4
A Laser measuring technique was proposed b
measuring grating for measuring in each of
Subcontract of STATINTL
Originally this machine was to have a Fe
is being incorporated into the machine. A
ing circuit goofs up the count and produce
were having difficulty
had hopegto be able to make
lems with the electronics and they were re
was optical alignment. Apparently there w
not very clear what the problem was. I th
They were trying to install it on the comp
the balance of his activities and return o
ident though that they would not have it o
Tues. Ed decided to go on for the rest of
measuring device or go back to the Ferrant
Tues., April 24 as to whether to proceed
make the decision. That should be enough
to demonstrate whethe
anti fringe
the two axes.
device and it
so, almost
ns,
rward and
nexpensive
depends on the
.racSr with
however de-
.g stage moves
the electronics
:ularly Ferranti*
into the count-
errors.
with the device.
rator. It was
nk part of it
re also prob-
oing some of
decision on
ith the Laser
?.. It was ev?
Aerating on
the week for
a Saturday to
time for
r or not they
I suggested that Ed talk to STATINTL
PST A T1 K ITI
general problems in using them. Ed and I Lan to see
on Friday afternoon.
STATINTL I was not impressed with structural design.
They seemed to put the mass where it would do the 1
good. The alsq are using Magnesium for he movyin
stages, and it is not an especially stable material
Approved For Release 2007/07/25: CIA-RDP78bU414
 Electroluminescence
Approved For Release 2007/07/25: CIA-RDP78BO4747AO01000060034-4
April 24,
1964
manufactures plastic panels, laminates
tins for the Aerospace industry. ~ heir home office
Their panels are made by depositing a green phosphor on
an opaque plastic base and then covering that with a trams-
parent plastic material. Different colors are obtained
by coloring the transparent plastic overlay. Electrodes
are attached to apply a voltage across the phosphor.
This must be an AC voltage as the phosph&r is not excited
by a DC field. They use 115 volta, 400 cycles AC as their
standard. Their panels are all special de igg.,design,
made to order shapes. Cost varies but is i the range of
$50 per square foot. The principal application is for
instrument panels and other displays.
At present their largest panel is 3 ft. by
by manufacturing equipment. The minimum w
is 3/16 inch. They make only flat panels.
make contoured panels but such panels are
difficult to manufacture and the rejection
Brightness under normal conditions starts
Lamberts and decays as some function of e?
Lamberts in 1000 hrs. In 2000 hours it re
lamberts and continues to approach some mi
asymtotically. Brightness can be increase
ing frequency and voltage. At 208 volts a
brightness will increase to approximately
however life is considerably reduced under
said that
experimental panel which achieved a bright
ft. L. It was however a complicated set u
had to be water cooled. Panel life was pr
I told that my interest was th
application of E.L. panels as a light sour
viewing m.d I wanted about 1000 ft. L. He
panels were not bright enough. They had I
x-ray negatives laid on the panels and it
difficult to observe details readily. F_
2 ft, limited
11 thickness
They can
xpensive,
rate is high.
utat7ft.
to 2 ft.
ches 1? ft.
.imam value
. by increas-
.d 800 cps, the
0 ft. Lamberts,
these conditions.
!ad made an
less of 200
and the panel
>bably very short.
possible
:e for photo
said their
Joked at medical
gas a little
Approved For Release 2007/07/25: CIA-RDP78BO4747AO01000060034-4
 Approved For Release 2007/07/25: CIA-RDP78B04747A001000060034-4,-TINTL
March 109 964
Bevelop processing Techniques (Proposal)
had a numbe of topics
STATINTL to review wit such as the Chip
Processor proposal, the Enhancer, the ADD-4 Dryer,
the HTA/5 investigative program, and the HTA/6.
This is a full weeks agenda. i attend d the discuss-
sions on Tues Mar. 10 on the HT A/25 inve tigative Pro-
gram and the discussions with on the
Chip Film Processor.
Extensive discussion of the proposed in,
program covered a wide range of aspects
_]proposes to set up a separate group
a research Coordinator who reports dire,
Director of Engineering. They will put
clean room in an enclosed area at the N
their plant. =agreed with the need f
security of the area and the control of
estigative
of the work.
epvvting to
tly to the
a portable
rth end of
r strict
visitors.
Some examples of the program tasks were discussed
such as the need for some basic facts bearing on the
requirement for solution filtering and he need for
maintaining a clean room condition. is is amenable
to investigation and will be part of th program*
described his proposed c
processor. He is also full of ideas to
sing technique.
ip film
the applica-
e mentioned
e film enters
:r p
g
t
g
a stra
horizontally at the middle of the developer tank,
passes through fax and wash and exits from the middle
of the wash tank with no mechanical barriers. He also
mentioned applying his aa"i air bearing to reductions
in size of coating alleys. They can't touch the coated
emulsion until it dries, so his air be ring permits
them to loop the film around without t uching it.
He is also investigating a new pressur boost proces-
h rocessor in waicn ti
tI
ou
h
i
has done considerable developme
applicable the chip film requirements
commercial amateur market, but much of
t of kis a
iming at the
it is directly
n your shop.
Approved For Release 2007/07/25: CIA-RDP78B04747A001000060034-4
 Approved For Release 2007/07/25: CIA-RDP78BO4747AO01000060034-4
April 1, .964
Digital Readout Compar?tor
The first system was shipped
According to their shipper,
toL__] ?n ran. 17, 64.
they shipp d:
Model 282 A Serial #1
Model 282 A Serial #1 and 2
Model 282 A Serial #1
L
22 Cables
3 Manuals
Cptosyn reading head which is what s using. He
STATINTL had had no word from r garding any
differences in wiring or other-pro ems with the counters.
STATINTL Storie will call[ j to see if there
thing he should know about.
STATI NTL
STATI NTL
is any-
'T'he second system was shipped to Franco is on Feb. 25
and according to the 0 shipper it contained:
1 ea. Control Panel Model 282 A Ser. #2
2 ea. Counters Model 282( B Sero #1 and 2
1 ea. Synchronizer Model 282 A Ser. #2
went
went
that
job.
1 ea. Control Panel
2 ea. Counters
1 ea. Synchronizer
22 Cables
3 Manuals
checked with) Ithe engineer on the
He was fully aware that two model A counters
with the first system and two mode B counters
with the second system. it was inconceivable
they could have been mixed up.
has your correct mailing address. He will send
data regarding their cost overrun o this job.
They haven't been paid yet and their first invoice
is over 60 days old and is in their overdue accounts.
officer.. He will resubmit the invoice aid hope for v
panel and what will be on the counter.
counters will be identical.
still expects to get the proposal
4-axis counter mailed to by priday
He was happy to hear that it would be ac
package the counters as complete units.
more standard design for them. It cuts
connectigg cabling and speeds up assembl
out. The enclosed Xerox copy of the pre
panel is marked to show what will be on
for the
pril 10.
ep#able to
This is a
own inter-
and check
ent control
he control
11 fout
Approved For Release 2007/07/25: CIA-RDP78BO4747AO01000060034-4