DUAL GAMMA PROCESSING MSN 1109 INDEX RECORD

Document Type: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP78B03826A000100090078-0
Release Decision: 
RIPPUB
Original Classification: 
T
Document Page Count: 
1
Document Creation Date: 
December 28, 2016
Document Release Date: 
September 17, 2008
Sequence Number: 
78
Case Number: 
Publication Date: 
May 13, 1970
Content Type: 
CABLE
File: 
AttachmentSize
PDF icon CIA-RDP78B03826A000100090078-0.pdf50.23 KB
Body: 
0 Approved For Release 2008/09/17: CIA-RDP78BO3826A000100090078-0 T 0 P S E C R E T 131802Z MAY 70 CITEI X515 13 Mar 70 18 -fil- / a 2 SUBJ: DUAL GAMMA PROCESSING MSN 1109 INDEX RECORD 1. HAS DETERMINED 25 PCT MSN 1108 AND 3 PCT MSN 1109 INDEX RECORDS EXPOSED AT SOLAR ELEVATION BELOW 15 DEG. LARGE PRECENTAGE OF LOW SOLAR ELEVATION ACQUISITION MSN 1108 SUGGESTS REASON FOR DENSITY EXTREMES ENCOUNTERED THAT MSN. 2. NO EVIDENCE EXISTS FROM MSN 1109 INDEX RECORD SUG- GESTING DUAL GAMMA PROCESS WILL OVERCOME DENSITY EXTREMES SIMILAR TO THOSE ENCOUNTERED MSN 1108; HOWEVER, EVALUATION OF SIMILAR COVERAGE FROM 1108 AND 1109 INDEX RECORDS INDICATES DUAL GAMMA PROCESS HELPED COMPRESS HIGHLIGHT AREAS ON MSN 1109. HIGHLIGHT COMPRESSION HELPFUL WHEN DESERT AND HIGH REFLECTANCE TERRAIN IS IMAGED. DUAL GAMMA PROCESSED NEGATIVES PROVIDES MORE IMAGERY IN A USEABLE DENSITY RANGE. T 0 P S E C R E T END OF MESSAGE OE src~er DVII- "? Cep 25X1 25X1 Approved For Release 2008/09/17: CIA-RDP78BO3826A000100090078-0