KH-4A Corona

KH-4A 4 [USAF]

KH-4A carried two J-1 panoramic cameras, with a focal length of 61 cm, and a ground resolution of 2.7 m.

KH-4A also carried a 4 cm index camera, with a focal length of 38 mm, a ground resolution of 162 m, and frame coverage of 308 km × 308 km.

Secondary Payloads

Some satellites carried secondary payloads mounted on the satellite:

• KH-4A 2 carried the Discoverer Research Package (Research Module) payload
• KH-4A 4 carried the LPARL Aurora 1964 (ORBIS 1) payload
• KH-4A 5 carried the IPEX (Research Module) payload
• KH-4A 11 carried the BIT 7051? (BIT 1) ELINT payload
• KH-4A 13 carried the BIT 7052 (BIT 2) ELINT payload
• KH-4A 14 carried the ORBIS payload and the BIT 7053 (BIT 3) ELINT payload
• KH-4A 15 carried the BIT 7054? (BIT 4) ELINT payload
• KH-4A 16 carried the BIT 7055? (BIT 5) ELINT payload
• KH-4A 17 carried the RM-104 payload and the BIT 7056? (BIT 6) ELINT payload
• KH-4A 18 carried the BIT 7057? (BIT 7) ELINT payload
• KH-4A 19 carried the BIT 7058? (BIT 8) ELINT payload
• KH-4A 21 carried the BIT 7059? (BIT 9) ELINT payload
• KH-4A 26 carried the LPARL Aurora 1965 (Research Module) payload
• KH-4A 43 carried the STP S67-3 (Module 283) payload, consisting of the RM-12, RM-15 and SXS instruments. The RM radiometers had been flown before on the unsuccessful MRPV (Corona 99) satellite.

When the launch vehicle switched to the more powerful Thorad-SLV2G Agena-D, many missions carried small "Subsatellite Ferret" or other small satellites into orbit.