Halo CME MailHalo CME Mail
Date: Tue, 21 Oct 2003 18:03
From: Gareth Lawrence 
Subject: Full Halo CME on 2003/10/21, backsided




LASCO observed a full halo CME on 2003/10/21. A bright
wide loop front was first visible in the SE from 03:54 UT
and had developed into a full halo CME by 04:54 UT,
albeit rather faint in the W. The front first appeared
in C3 at 04:18 UT and had developed into a full halo
CME by 04:42 UT.

The EIT images between ~03:30 - 04:30 UT clearly show
a major eruptive event close to but over the SE limb,
especially when viewed as a running difference movie.
This event has therefore been determined backsided.

EIT full-disk and running difference movies are 
available at  

ftp://ares.nrl.navy.mil/pub/lasco/halo/20031021

Note that all six movies have been made with 
full-resolution 1024x1024 images and therefore 
the uncompressed mvi files are very large (~29 MB).
High- and lower-resolution mpgs have also been 
provided. Please note also that the usual color
tables and bytescaling have not necessarily
been used, so the movies may appear slightly 
different to usual.

Best wishes,
        Gareth Lawrence.


+----------PLEASE NOTE NEW EMAIL ADDRESS-----------+
Gareth Lawrence,           grl@grace.nascom.nasa.gov 
SOHO-LASCO Operations Scientist,                                           
CUA, MC 682.3, Bldg 26, Rm 001,   F: +1-301-286-0264         
NASA Goddard Space Flight Center,
Greenbelt, MD 20771.              P: +1-301-286-2941
++