Global high-resolution imaging of hotspots on Io

Images at 3.8 microns are presented of the Jovian satellite Io at an unprecedented ground-based resolution of 0.18 arcsec. The images were obtained through 2D speckle interferometry using the 6.86-m aperture of the Multiple Mirror Telescope in November 1989 and March 1990. To process the images, spe...

Full description

Saved in:
Bibliographic Details
Published in:The Astronomical journal 1991-10, Vol.102 (4), p.1485-1489
Main Authors: MCLEOD, B. A, MCCARTHY, D. W, FREEMAN, J. D
Format: Article
Language:English
Subjects:
Astronomy
Cosmochemistry. Extraterrestrial geology
Earth sciences
Earth, ocean, space
Exact sciences and technology
Extraterrestrial geology
Jupiter
Planets, their satellites and rings. Asteroids
Solar system
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Images at 3.8 microns are presented of the Jovian satellite Io at an unprecedented ground-based resolution of 0.18 arcsec. The images were obtained through 2D speckle interferometry using the 6.86-m aperture of the Multiple Mirror Telescope in November 1989 and March 1990. To process the images, speckle-reduction techniques are developed which are 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. (Author)
ISSN:0004-6256
1538-3881
DOI:10.1086/115974