FOLLOWING ARE (SANITIZED) S REQUIREMENTS FOR PATIO CALIBRATION

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04558A001800050026-0
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Sequence Number: 26
• Content Type: CABLE

Approved For Release 2008/02/11: CIA-RDP78BO4558AO01800050026-0
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1. FOLLOWING ARE
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(REQUIREMENTS FOR PATIO CALIBRATION
OBSERVATIONS FOR S/I CAMERA. THESE ARE INTENDED TO UTILIZE AS MUCH
AS POSSIBLE THE EQUIPMENT AND PROCEDURES CURRENTLY USED IN THE
PATIO ROUTINE. DEPARTURES FROM THIS ROUTINE AS OUTLINED BELOW ARE
NECESSARY TO PROVIDE THE INTERIOR ORIENTATION CONSTANTS CUSTOMARILY
FURNISHED WITH THE LENS CALIBRATION REPORT.
2. AUXILIARY EQUIPMENT:
A. TIME RECORDER WITH A PERMANENT RECORD, IF AVAILABLE,
OR A PRECISION TIME PIECE. (DIFFERENTIAL REFRACTION REQUIREMENTS
IMPOSE AN ABSOLUTE TIME ACCURACY OF LESS THAN 10 SEC TIME, THEREFORE
PLUS OR MINUS 1 SECOND LEAST READINGS MORE THAN SATISFY THIS
REQUIREMENT.)
B. 2.5, 5, 10, 15 MC RECEIVER.
C. REMOTE EXPOSURE CONTROL.
D. VACUMM PUMP AND ACCESSORIES.
E. HYGRO-THERMPGRAPH.
F. BAROMETER.
3. FILM:
IN ORDER TO REALIZE THE MAXIMUM STELLAR RECORD FOR CALIBRATION
PURPOSES IT IS RECOMMENDED THAT THE OPERATIONAL TYPE EMULSION BE
REPLACED WITH EK TRI-X OR AN EQUIVALENT.
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A. STELLAR, APPROX. 15 FEET, 35 MM ROLL, TRI-X OR EQUIVALENT.
B. TERESTRIAL, APPROX. 30 FEET, 70 MM ROLL, TRI-X OR EQUIVALENT.
4. SPECIAL PROVISIONS:
A. FIDUCIALS: PROVISION SHALL BE MADE FOR ADJUSTING FIDUCIAL
ILLIMINATION ON BOTH FORMATS IN ORDER TO ACHIEVE AN OPTIMUM
FIDUCIAL EXPOSURE FOR FASTER EMULSIONS. IF THE FIDUCIAL SYSTEM
CONSISTS OF A BACKGROUND LIGHT IMPRESSED RESEAU THIS CONSIDERATION
IS OBVIATED.
B. BAFFLING: BAFFLING FOR SOLAR FLARE AND EARTH REFLECTION
SHALL BE OPERATIONALLY MOUNTED FOR THE TEST.
C. LENS APERTURES SHALL BE SET AT OPERATIONAL LEVELS FOR THE
TEST.
D. SHUTTER SPEEDS SHALL BE SET FOR EQUAL AND CONCURRENT
TIMES FOR BOTH CAMERAS AND SHALL BE AUTOMATICALLY CONTROLLED BY
A REMOTE EXPOSURE CONTROL. THE PULSE RANGE SHALL BE TAKEN BETWEEN
I AND 60 SECONDS. SHUTTER CONTROL INTERROGATION SHALL BE MANUALLY
CONTROLLED BY THE OPERATOR-OBSERVER.
5. OBSERVING CONDITIONS:
A. CLOUD OR HAZE COVER SHALL NOT BE SUFFICIENTLY PREVALENT
TO CONTINUALLY HAZARD AN OBSCURATION OF ANY PART OF EITHER FORMAT.
EXPOSURES KNOWN TO HAVE BEEN PARTLY OBSCURED SHOULD BE REPEATED
UNTIL A MINIMUM REQUIRED NUMBER OF CLOUD FREE EXPOSURES HAVE BEEN
OBTAINED.
B. ATMOSPHERIC CLARITY SHALL BE SUCH THAT FIFTH MAGNITUDE
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STARS ARE VISABLE TO THE UNAIDED EYE.
C. PHOTOGRAPHY SHALL BE SUSPENDED FOR TIMES WHEN THE MOON
APPARENTLY APPROACHES WITHIN 15 DEGREES OF EITHER FORMAT.
6. RECORD:
A. INSTRUMENT SERIAL NUMBER.
B. DATE OF TEST.
C. WWV REFERENCED TIME ENTRIES ON TIMER OUTPUT.
D. CYCLE NUMBER AND CORRESPONDING TIME REGISTRATION OF EACH
EXPOSURE.
E. CHRONOLOGICAL HISTORY OF THE TEST ACCORDING TO SCHEDULE.
F. BAROMETER, HOURLY RECORDINGS (0 INCHES .01) HG.
G. TEMPERATURE (0 DEGREES.5), AND HUMIDITY.
H. ESTIMATED CLOUD COVER AND GENERAL VISIBILITY.
I. MALFUNCTIONS AND UNUSUAL OCCURANCES.
J. GEOGRAPHIC POSITION OF THE OBSERVATION PLATFORM (PLUS
OR MINUS I MIN. LATITUDE, PLUS OR MINUS I MIN. LONGITUDE)
7. PROCEDURE:
A. INTERIOR ORIENTATION: THE INSTRUMENT SHALL HAVE THE
PROVISION FOR ALTERNATELY ORIENTING THE CAMERAS SUCH THAT:
(1) THE TERRAIN CAMERA IS DIRECTED TOWARD THE ZENITH AND
LEVELED TO APPROXIMATELY ONE MINUTE OF ARC.
(2) THE STELLAR CAMERA IS SIMILARLY ORIENTED
AND LEVELED.
B. ABOUT TEN CYCLES SHALL BE EXPOSED FOR EACH CAMERA AT THE
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ZENITH POSITION. IT WILL BE NECESSARY TO DETERMINE THE OPTIMUM
EXPOSURE TIMES FROM THE FIRST PATIO CALIBRATION. IT IS ESTIMATED
THAT USING THE OPERATIONAL EMULSION THAT A MAXIMUM OF TEN SECONDS
WILL BE ACCEPTABLE FROM THE STANDPOINT OF IMAGE MOTION. TRI-X
OR AN EQUIVALENT MAY REQUIRE TEN SECONDS OR LESS DEPENDING UPON
THE AMOUNT OF BACKGROUND FOGGING.
Co RELATIVE ORIENTATION: THE INSTRUMENT SHALL HAVE A
PROVISION SUCH THAT THE PLANE DEFINED BY THE CAMERA OPTICAL AXES
MAY BE ORIENTED GENERALLY ALONG THE MERIDIAN WITH THE STELLAR
CAMERA AXIS ELEVATED APPROXIMATELY 25 DEGREES ABOVE THE SOUTH
HORIZON.
D. APPROXIMATELY TEN CYCLES OF SIMULTANEOUS EXPOSUREES SHALL
BE MADE IN THE CONFIGURATION RELATIVE ORIENTATION WITH SYNCHRONIZED
OPENING AND CLOSING OF THE TWO CAMERA SHUTTERS.
E. AN IDENTIFYING EXPOSURE OF 30 SECONDS DURATION SHALL BE
MADE AT THE BEGINNING AND END OF EACH SEQUENCE (E.G., 10 STELLAR
ZENITH EXPOSURES).
F. FOUR CYCLES SHALL BE RUN BETWEEN EACH MAJOR EVENT (I.
E., BETWEEN IDENTIFYING TRAIL EXPOSURES) WITH LENSES COVERED IN
ORDER TO PERMIT A NON-DESTRUCTIVE FILM CUT.
8. SINCE CURRENTLY HAS A CONTRACT WITH FOR THE
MEASUREMENT OF STELLAR IMAGES FROM THE M, L AND J PROGRAMS FOR
THE PURPOSE OF PROVIDING WITH ATTITUDE INFORMATION, IT IS
DESIRE THAT PATIO STELLAR OBSERVATION EXPOSURES BE
FORWARDED DIRECTLY TO " WHETHER THEY ARE ACCOMPLISHED AT EITHER
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SECUITY PROCEDURES HAVE BEEN ARRANGED FOR RECEIPT
AND HANDLING OF SUCH MATERIAL BY HEADQUARTERS SECURITY. IS 25X1
PREPARED TO PROCESS SUCH EXPOSURE MATERIAL IF NECESSARY, BUT THE
OPTION AS TO PROCESSING RESPONSIBILITY IS OPEN. IN ORDER FORT I 25X1
TO MEET THE TIME REQUIREMENT IMPOSED BY WHICH WAS DICTATED
BY TECHNICAL DATA DISSEMINATION REQUIREMENTS, PATIO 2bAl
STELLAR OBSERVATIONS EXPOSURE SHOULD BE FORWARDED TO AS SOON 25X1
AS THEY HAVE BEEN ACCOMPLISHED. UNIMPORTANT WHETHER PATIO STELLAR
OBSERVATION EXPOSURE ARE MADE BEFORE OR AFTER HATS TEST. INFORMATION
SHOULD BE INI (HANDS PRIOR TO INTENDED LAUNCH DATE FOR S/I 25X1
CAMERA CONCERNED.
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