The rings of Uranus

  title={The rings of Uranus},
  author={J. Elliot and E. Dunham and D. Mink},
AT least five rings encircle the planet Uranus—as indicated by five brief occultations of the star SAO 158687 that occurred both before and after its occultation by Uranus on 10 March 1977. We observed these events with our three-channel occultation photometer1, attached to the 91-cm telescope aboard the Kuiper Airborne Observatory (KAO). Both Uranus and the star were contained within a focal plane aperture whose diameter, projected onto the sky, was 46 arc s. A beamsplitter and focal plane… Expand
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