From spencer@lowell.edu Sat Aug 26 02:30:32 1995
From spencer@lowell.edu Sat Aug 26 02:30:32 1995
From: spencer@lowell.edu (John R. Spencer)
Date: Sat, 26 Aug 1995 02:29:12 -0700
To: oleroemer@lowell.edu
Subject: Io Volcano News
Cc: spencer@lowell.edu
Content-Length: 846
X-Lines: 14
Status: RO

Unusual activity continues on Io.  Christophe Dumas and I just
finished observing the August 26 occultation and eclipse of Io by
Jupiter with NSFCAM at the IRTF, with unusually good seeing.  3.8 
micron sunlit images of Io just before occultation ingress showed Loki
clearly at moderately bright levels, against the sunlit disk.  In
Jupiter eclipse, four very cleanly separated hot spots were visible in
resolved images, with Loki being the brightest (at least longward of 3
microns).  The second brightest hot spot is *probably* the one that
first appeared in July, but as usual, further analysis is necessary.
 
The most striking thing is the apparent resurgence of activity at
Loki, though this is not (yet) at the high level of the 1989/90
and 1991 brightenings.  Did the JPL team see any signs of a Loki
revival in their recent photometry?