Descrizione : The KH-11 series of reconnaissance satellites are the first American spy satellites to utilize electro-optical digital imaging, and provide a real-time optical observation capability. They replaced the earlier film-return type satellites of the KH-8 Gambit-3 and KH-9 Hexagon series. The KH-11 series transmit their data via relay satellites called Satellite Data System (SDS-1, SDS-2, SDS-3), which operate in Molniya orbits and geostationary orbits.
Vandenberg post stamp and Big Bird 13 , Samos satellite.

USA 940 - image retouchée ?

Pagina : future · Ref: USA  940 

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KH 11-01 · aka BIG BIRD 13, CRYSTAL 1, KENNEN 1 · (SATELLITE) · TITAN 3 D