From Edward Arnold GRAFTON
@. . . . . . From:
"Ed Grafton" <egrafton@ghg.net>
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Sent:
Subject: Re: [ALPO_Jupiter] SEB splits into three
> Hi Frank and everyone,
I wonder if the third belt is a further extension of the S. Trop. band
that began to emerge from the GRS in early Nov. and quickly extended to a small
brown oval in the STZ at about CM2 20. The extensions movement from the GRS
became arrested at this point and remained stable for a period of weeks.
Very little change occurred
between
http://www.egrafton.com/11-19-01.jpg)
and
http://www.egrafton.com/dec-09.jpg
In Don Parker’s image a very tenuous belt can be seen further extending the emerged S. trop. band although faintly. It
has clearly become more pronounced from Clay Sherrod’s image from Dec
27
http://www.arksky.org/asoimg/jupiter1227d.jpg
Below is an excerpt from a John
Rogers email from
> > The S.Trop.Band started emerging from the p. end of the GRS on
Nov.2-7, and has now extended to the oval. (See Sherrod's 'GRSmosaic', and
Grafton's images on Oct.23 and Nov.7 and 19.)
This happens perhaps once a year or so, especially at the end of an
episode of SEBs jetstream activity. Has the current episode just finished? - On
Ed Grafton's images of Nov.18 & 19, there is still plenty of small-scale
disturbance on SEBs but perhaps the substantial dark spots have subsided. Alternatively, the brown oval may have
blocked SEBs jetstream spots from reaching the GRS and thus triggered the
release of the dark material into the S.Trop.Band.
(
@. . . . . . . . Subject: Jupiter Observation
Hi
Jupiter Observers,
The
3rd SEB can be seen in this image to be a further extension of the the S. Trop. band that began to emerge from the GRS in early Nov. and
quickly extended to a small brown oval in the STZ at about CM2 20-25. The
extensions movement from the GRS became arrested at this point and remained
stable for a period of weeks through mid December. In late December Frank J
Melillo and Clay Sherrod had made observations of further growth of the S.
Trop. band.
The shadow in this image is
from Io. As we are just past opposition Io's shadow is in close proximity to
it. In this image Io can be seen just to the left and adjacent to the shadow
and displays pronounced polar darkening of it's S. polar region.
On the S. edge of the
The weather in
Jupiter
images :
http://www.egrafton.com/01-04-02.jpg
Ed Grafton,
Image data:
2 BLUE + IR rejection, .6 seconds, Edmunds filters
2 GREEN + IR rejection, .6
seconds, Edmunds filters
2 RED
+ IR
rejection, .6 seconds, Edmunds filters
1 IR blocker only .3 seconds, Edmunds IR Blocker
(
@. . . . . . . . Here is another image from
Please note that the previous
image that I sent today was taken at
The sky was very transparent,
9/10, and seeing was good, 8/10, with a 3 MPH SE wind. No dew was present.
Jupiter
images :
http://www.egrafton.com/1-04-02a.jpg
(
Ed GRAFTON (
