Beschreibung : SAS-C was the third in the series of small spacecraft whose objectives were to survey the celestial sphere for sources radiating in the X-ray, gamma-ray, UV, and other spectral regions. The primary missions of SAS-C were to measure the X-ray emission of discrete extragalactic sources, to monitor the intensity and spectra of galactic X-ray sources.
Malindi post stamp and Explorer 53 satellite.

USA 740 A - picture enhanced ?

Seite : future · Ref: USA  740 A

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EXPLORER 53 (SAS 3) (SATELLITE) · SCOUT F1