THE 1102 (SANITIZED) CONDUCTED A VERY SMALL STUDY ON THE QUALITY OF THE DUPES RELATIVE TO THE ORIGINAL NEGATIVE

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04549A000600020006-8
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 1
• Document Creation Date: December 28, 2016
• Document Release Date: February 27, 2007
• Sequence Number: 6
• Publication Date: February 28, 1968
• Content Type: CABLE

Approved For Release 2007/02/28: CIA-RDP78BO4549AO
9
T 0 P S E C R E T 9.89126Z FEB 68 CITEI
OUT64475
F 6 28 21 55 Z 25X1
25X1
CORONA - PERFORMANCE EVALUATION TEAM FOR 110?
1. THE 1102 1I CONDUCTED A VERY SMALL STUDY ON THE QUALITY 25X1
OF THE DUPES RELATIVE TO THE 0 NAL NEGATIVE. THIS WAS DONE
BY HAVING THE MAJORITY OF THE READ THE RESOLUTION 25X1
TARGETS ON BOTH THE ON'S AND HE DP'S. THE SUMMARY 25X1
OF THEO FINDINGS ARE AS FOLLOWS (ALL VALUES ARE IN TERMS a 25
REV CAMERA ON DP DIFFERENCE
D-16 AFT 5.7/7.7 9/9 -3.3/-1.3
(HIGH CONTRAST)FWD 5.8/6.1 8/8.3 -2.2/-2.2
D-16 AFT 8.3/9.0 10/10 -1.7/1
(MED CONTRAST)FWD 7.7/8 10/9 -2.3/1
D-32 AFT 12/10 12/12 0/-2
FWD 12/12 12/13 0/-1
D-48 AFT 8/7 10/8.5 -2/-1.5
FWD 6.3/7 8/8.5 -1.7/-1.5
D-97 AFT 13/16 13.6/18.4 0/-2.4
FWD 12/ 16 13.6/20 -1.6/-4
FROM THIS DATA THERE WOULD APPEAR TO BE A LOSS IN IMAGE QUA
(FROM ON TO THE DP) WHICH GETS PROGRESSIVELY GREATER AS THE
QUALITY OF THE ORIGINAL GETS BETTER.
2. IF THIS DATA AND THE INDICATED TREND IS VALID, THIS I
OF SOME CONCERN TO THE 0 A COMPLETE REVIEW OF THE CORONA
DUPLICATING PROCESS HAS NOT BEEN MADE FOR SOME TIME. THE VE
REAL POSSIBILITY EXISTS THAT THE CURRENT DUPLICATING PROCESS
AND TECHNIQUES WHICH WERE DEVISED FOR J-1 ARE NO LONGER VALID
FOR THE HIGHER PERFORMANCE BEING EXPERIENCED ON J-3. THIS
POSSIBILITY SHOULD BE INVESTIGATED
HE 0 SUGGESTS THATI REPRESENTATIVE (D.
UNDERTAKE A STUDY TO ASSESS ADEQUACY OF THE 25X1
CURRENT DUPLICATING PROCESSES, AND TO ESTABLISH THE DEGREE OF AdvOnteCOPY
INFORMATION LOSS FROM THE ON TO THE DP. THE SIGNIFICANCE sancflzed
OF THIS LOSS SHOULD ALSO BE ASSESSED. PARTICULAR ATTENTION Vd'thIGO
SHOULD BE PAID TO 1102 AS THIS MISSION IS NOW INDICATIVE OF
WHAT TYPICAL CORONA SYSTEMS WILL BE PRODUCING IN THE FUTURE.
T 0 P S E C R E T