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   ANS    ARIEL V
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   UHURU    VELA 5B

Astronomische Nederlandse Satelliet (ANS)

photo of ANS Astronomische Nederlandse Satelliet (ANS) was launched by a American Scout rocket from the Western Test Range, California, on August 30 1974 into a polar orbit. It was a collaborative effort between the Netherlads (NIVR) and USA (NASA). The University of Groningen and Utrecht (Netherland) provided the Ultraviolet and the Soft X-ray experiments, the American Science and Engineering provided the hard X-ray experiment.

Mission Characteristics

* Lifetime : 30 August 1974 - 14 June 1977
* Energy Range : 0.1 - 30 keV (X-ray) 1500-3300 (UV)
* Payload :
  • Ultraviolet experiment (1500-3300Å)
  • Soft X-ray experiment (SXX) composite of two parts
    • Parabolic mirror (eff area=144 cm2) with a small area proportional counter on the focal plane
      0.16-0.28 keV 34´ FOV
    • Proportional counter 1-7 keV eff area=45 cm2 38´ X 75´ FOV
  • Hard X-ray experiment (HXX) composite of two parts
    • LAD 10´ x 3° FOV 1-30 keV eff area=40cm2
    • Bragg Crystal Assembly (BCA) to search for Si lines
* Science Highlights:
  • Discovery of the X-ray bursts
  • Detection of X-ray from Stellar Coronae (Capella)
  • First detection of X-ray flares from UV Ceti and YZ CMi
* Archive : No data available at HEASARC
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Last modified: Thursday, 26-Jun-2003 13:48:54 EDT