Near-infrared Observations of Saturn's Satellites at True Opposition

Details Near-infrared Observations of Saturn's Satellites at True Opposition Near-infrared Observations of Saturn's Satellites at True Opposition

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.4101f&link_type=abstract

American Astronomical Society, DPS meeting #39, #41.01; Bulletin of the American Astronomical Society, Vol. 39, p.493

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The 2005 opposition of Saturn presented the rare opportunity to observe its satellites at the smallest possible phase angles attainable at Saturn's heliocentric distance. Here we present the analysis of observations obtained at Pic du Midi Observatory using Moicam, an infrared imaging instrument mounted on the 2-m Telescope Bernard Lyot during the period 10 - 17 January 2005 at phase angles ranging from 0.37° to 0.01°. Using broadband near-infrared filters JHK, centered at 1.2, 1.6, and 2.2 microns, respectively, we observed the opposition effect on Enceladus, Tethys, Dione, and Rhea. In addition, observations using the narrow band Paschen beta filter, centered at 1.28 microns, reveal the opposition effect on Titan and Iapetus.

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