PULSE CAMERA SPECIFICATIONS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03172A000300020087-3
• Release Decision: RIFPUB
• Original Classification: C
• Document Page Count: 5
• Document Creation Date: December 22, 2016
• Document Release Date: February 14, 2012
• Sequence Number: 87
• Publication Date: November 20, 1959
• Content Type: MISC

Declassified and Approved For Release 2012/02/14: CIA-RDP78-03172A000300020087-3
PULSE CAMERA SPECIFICATIONS
6W
1.0 Ayer Pulse Camera System consists of the following components:
1.1 Camera Body with 50mm lens
1.2 1000 ft. magazine
1.3 400 ft. magazine
1.4 100 ft. magazine
1. 5 Reflex Viewfinder (modified VISOFLEX II)
1. 6 Telephoto lens support
1.7 Mirrotel lens support
1.8 Boresight
1.10 Extension power cables
1. 11 Adapter mount for K-100 sensor
1.12 Blimp
1.13 Spare Parts
1.9 2
ampere hour power packs
2. 0 Camera Body
The camera body incorporates the following features:
2. 1 Film transport capable of proving a complete cycle in 1/2
seconds.
2.2 Variable shutter to provide shutter speeds of 1/5, 1/10,
1/25, 1/50, 1/100, 1/200, 1/400 second.
NOT U N t
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2.3 Automatic exposure control to provide 1/4 stop accuracy
over a wide range of shutter and diaphragm settings. The
sensitivity of the photo cell permits automatic shutter con-
trol operation at light levels as low as 1/2 foot candles.
Film speed settings provide for films with ASA ratings of
10, 32, 80, 160, 250, 400.
The exposure oontrol system is of the "etosed loop" design
and controls the opening of the shutter. An auxiliary variable
density blade provides the means for modulating the light
reaching the cell. Light sensing and shutter adjusting occur
between exposures.
2.4 Data Recording
A data recording chamber including a motor driven time
indicating device and pulse lamp is included. Time recordings,
readable at 15mm intervals, are put at the corner of each
frame.
2,5 Low Light Level Switch
In order to conserve power, and film, the camera including
exposure control system will shut down when the subject il-
lumination falls to a level which is two stops below normal.
The camera will remain shut down until the subject illumination
reaches a point which is two stops below the normal exposure.
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2. 6
Camera Controls
The following controls are included on the camera:
2.
6. 1
Manual shutter setting knob
2.
6. 2
"On" - "Off" Power switch
2.
6.3
Shutter selector switch for selecting manual or automatic
operation
2.
6.4
A. S. A. selector switch to set the automatic shutter con-
trol for the required film speed.
All the controls with the exception of the manual shutter control are
protected by a tamper-proof cover.
2.7 Control Box
A small, hand held, control box is provided at the end of a three
foot cable. Two controls are included. These are:
2. 7. 1 Shutter selector, which permits the operator to take time
exposures as well as instantaneous exposures. This
control also permits boresighting through the lens with
the shutter wide open.
2.7.2 Push button, to pulse the camera. Depressing the button
causes the camera to take pioiouoe pictures at the rate of
two a second until released. When the shutter selector
is set for "time", actuation of the push button causes the
shutter to open fully. Release of the button will close
the shutter and transport the film to the next frame.
A latching device is provided for use when long time
exposures are desired or when boresighting.
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? a
2.8 Extension Cable
A 20 foot extension cable is provided to permit remote operation
of the camera.
2. 9 Reflex Housing
A modified Visoflex II is provided. This enables through the lens
viewing and focussing with short barrel Leica lenses of 135mm focal
length or longer. Shorter focal length lenses as bow as 28mm may
be used by removing the reflex housing. Lenses used without the
reflex hood must be provided with Practina bayonet mounts.
2.10 Lens
A 50mm Zeiss Tepsar f2. 8 lens is provided with the camera. One
yellow filter is included.
2.11 Magazines
All magazines are interchangeable. A film counter to indicate the
amount of film remaining is built into each of the magazines. The
pressure plates on each magazine are removable for easy cleaning.
2. 11.1 The 400 ft. and 1000 ft. magazines are designed for use
with film cores and must be loaded in the darkroom. A
tell-tale on the cover, indicates whether film is being
taken up.
2. 11.2 The 100 ft. magazine in designed for use with standard
daylight loading spools.
XaXX
Telephoto lens support
An adjustable lens support to accommodate a wide range of
lens sizes is provided. The yoke can be set for barrels of up to
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 i
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` ? , ~, rage
inches. The rails allow the support to be extended up to
Power Pack
Two 28 volt power packs are supplied, each capable of delivering
ampere hours of power at 28 D. C. A single power pack can handle
a 400 ft. load of film operating over a period of approximately days.
Two power packs in parallel,' will handle a 1000 ft. magazine over a period
of days.
The power packs are made up of nickle cadmium cells which are
hermetically sealed and are therefore spill-proof and leak-proof.
Declassified and Approved For Release 2012/02/14: CIA-RDP78-03172A000300020087-3