Global high-resolution imaging of hotspots on Io

Brian A. Mcleod, Donald W. Mccarthy, Jonathan D. Freeman

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We present 3.8 μm images of the Jovian satellite Io at an unprecedented ground-based resolution of 0 18. The images were obtained through two-dimensional speckle interferometry using the 6.86 m aperture of the Multiple Mirror Telescope in November 1989 and March 1990. To process the images we developed new speckle reduction techniques appropriate for objects with a size that is a significant fraction of the field of view. The images show three volcanic hotspots, including Pele, detected here for the first time since the Voyager 1 flyby in 1979.

Original languageEnglish (US)
Pages (from-to)1485-1489
Number of pages5
JournalAstronomical Journal
Issue number4
StatePublished - Oct 1991

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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