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Here are details about a : Space commemorative cover or Space Cover.
Kosmodrom / Plats : USA
Stämpeldatum: 30 Août 1961 Händelsetyp : Uppskjutning Startplatta / Plats : USA Vandenberg SFB (CA) Bemannad / Robotisk Mission : Robotisk Uppdragsmål/Typ : Militär / Hemlig
MIL
ou?/where?: au sol - ground
autographe?: non - none
Beskrivning : The KH-3 payload consisted of the further improved C``` (Corona triple-prime) single panoramic camera and a single General Electric return vehicle (SRV, Satellite Return Vehicle). The C```-camera was built by Itek Corporation and with a f/3.5 aperture and 61 cm focal length had a ground resolution of 7.5 m.
The satellite was based on the Agena-B upper stage, which provided attitude control in orbit. The film return capsule carried its own small solid-fuel retro motor to deorbit at the end of the mission with mid-air recovery of the returning capsule by a specially equipped aircraft.