FORMAT CALIBRATION

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B03826A000200010005-7
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 1
• Document Creation Date: December 28, 2016
• Document Release Date: February 5, 2008
• Sequence Number: 5
• Publication Date: May 18, 1970
• Content Type: CABLE

Approved For Release 2008/02/05: CIA-RDP78BO3826A000200010005-7
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T 0 P S E C R E T 012206ZMAY70CITEI 19444
SUBJ: FORMAT CALIBRATION
25X1
25X1
~~~1013~~
1. 0 HAS COMPLETED FORMAT CALIBRATIONS OF THE 11 25X1
FRAMES OF MATERIAL FROM CAMERA B, MODEL D. SEVERAL ITEMS OF
MUTUAL INTEREST WERE DISCOVERED DURING THIS CALIBRATION.
2. THE LAST SCAN ANGLE DISTANCE (FROM 115 DEGREES TO 120
DEGREES OF SCAN) WAS APPROXIMATELY 500 MICRONS SHORTER THAN ALL
THE OTHER SCANS. THIS IS 43 SECONDS OF ARC. (SPECS ARE 20 SECONDS).
3. THE FILM SPEED WAS A CONSTANT (WITHIN 1/10 OF 1 PERCENT)
THROUGHOUT EACH FRAME EXCEPT FOR AN AREA NEAR THE CENTER OF SCAN.
AT THIS POINT THERE WAS A SLOWDOWN OF 1.3 PERCENT FROM THE AVERAGE
FILM SPEED. THIS SLOWDOWN SPANNED AN AREA OF ABOUT 8 INCHES AND
THE FILM RETURNED TO NOMINAL SPEED.
4. THE SLIT (OR LIGHT PIPES) WAS MISALIGNED WITH THE
DIRECTION OF FILM TRAVEL BY 10.2 MINUTES. THIS APPEARS TO BE
WITHIN SPECS SO MAY NOT REQUIRE ANY ACTION.
5. THE START OF OPERATION MARKS WERE NOT POSITIONED IN
THEIR PROPER PLACE ON THE FILM AND ONE SET OF START OF FRAME MARKS
WERE ALSO NOT POSITIONED PROPERLY. THIS PROBLEM IMPACTS ALL
AUTOMATIC EQUIPMENT BEING DEVELOPED FOR EXPLOITATION AND TITLING,
AND SHOULD BE CORRECTED IN THE FLIGHT CONFIGURATIONS, IF POSSIBLE.
6. DETAILS OF THESE PROBLEMS CAN BE OBTAINED FROM 25X1
SIGCEN/NOTE CHARGE ADDED ADDRESSEE PER BRANCH REQUEST
T 0 P S E C R E T EOM GROUP ONE
25X1
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Approved For Release 2008/02/05: CIA-RDP78BO3826A000200010005-7