S/I OPERATION

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04558A001800270006-8
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 1
• Document Creation Date: December 28, 2016
• Document Release Date: April 14, 2008
• Sequence Number: 6
• Publication Date: March 24, 1964
• Content Type: CABLE

Approved For Release 2008/04/14: CIA-RDP78BO4558AO01800270006-8
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PSE C R E T 241731Z
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SUBJ: S/I OPERATION
1. DURING VISIT T ON 18 MARCH, THE S/I
OPERATION WAS DISCUSSED. UNDERSTANDS THAT FOR NEXT THREE
MISSIONS (UNITS 957, 958 AND 959) THE PROGRAMMED OPERATION IS FOR
ONE STELLAR FRAME FOR EACH STRIP CAMERA FRAME, THE START OF THE STELLAR
CAMERA EXPOSURE BEING FOUR AND ONE-HALF SECONDS AFTER STRIP CAMERA
TURN ON. AND FOR LONG STRIP FRAMES THE STELLAR CAMERA WILL BE
EXPOSED EVERY 15 SECONDS.
2. THE MINIMUM STELLAR RECYCLING TIME IS UNDERSTOOD TO BE FOUR
AND ONE-HALF SECONDS, ALLOWING FOR A TWO SECOND EXPOSURE.
REQUESTS THAT IF POSSIBLE THE STELLAR CAMERA BE EXPOSED SIMULTANEOUSLY
WITH THE FIRST TIME WORD ON THE STRIP FRAME OF A STEREO OR LATERAL
PAIR AND CONTINUE MAKING AN EXPOSURE EVERY FOUR AND ONE-HALF SECONDS
UNTIL COMPLETION OF THE STEREO OR LATERAL PAIR EXPOSURES. ON LONG
STRIP FRAMES REQUEST THAT STELLAR EXPOSURES BE MADE EVERY FOUR
AND ONE-HALF SECONDS.
T 0 P S E C R E T
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Approved For Release 2008/04/14: CIA-RDP78BO4558AO01800270006-8