From spencer@lowell.edu Tue Jul 25 04:21:31 1995
From spencer@lowell.edu Tue Jul 25 04:21:31 1995
From: spencer@lowell.edu (John R. Spencer)
Date: Tue, 25 Jul 95 04:19:02 MST
To: oleroemer@lowell.edu
Subject: Io Volcano News
Cc: spencer@lowell.edu
Content-Length: 657
X-Lines: 14
Status: RO


I'm just finishing up a run at the IRTF, watching Io before and
during a Jupiter occultation and eclipse.  My impression is that
there is a hot, fairly bright eruption in progress in the
northern hemisphere, perhaps at Surt again.  It is visible
against the sunlit disk at 3.8 and 3.5 microns, while at 4.8
microns a source to the east, perhaps Loki, is more prominent.
Eclipse images at 3.5 and 3.8 microns are dominated by a point
source, presumably the same one seen in sunlight before the
Jupiter occultation, and the source is also bright in eclipse
at 2.3 and 1.7 microns.  More later, once I've had a chance
to do some quantitative analysis.

JOhn.