
LASCO Activity Report for
April 22, 2005 SOHO Science Daily Meeting
Planner: K. Schenk, G. Stenborg
Event times are first frame seen in C2 camera unless otherwise noted.
These are preliminary observations for the daily SOHO science discussions.
Final analysis is reported on the Lasco CME list.
An archive of these reports is available.
Points Of Interest
- SOHO is in telemetry Submode 5 (since 2005/03/11 @ 15:00 UT).
- EIT 195 CME watch at half-res (512x512).
- Venus entered the C3 FOV from the right on 2005/02/26
(by the end of the day). Still visible.
2005/04/21 (Thursday)
00:06 UT W Limb Very diffuse and ragged front precedes the development
of a bright and ragged loop front (a little bit to S)
that starts at around 00:26 UT. By 03:26 UT a thin and
bright feature can be discerned in the trailing material.
07:50 UT E Limb Faint and diffuse jet-like front that quickly fades.
15:50 UT S West Extremely faint ragged front starts to be discernible
half way to the end of the C2 FOV. It fades in C3.
Due to its faintness it is difficult to give an exact
time of first appearance.
2005/04/22 (Friday)
00:26 UT ES East Slow development of a system of faint loops. By around
02:26 UT, a very faint expanding loop develops above
the S Pole.
06:26 UT ES East Bright and ragged loop front. Very faint extensions
above the E Limb. EIT 195 running difference images
show signatures of a CME above the SW Limb starting
at around 05:48 UT, apparently originated behind the
limb.
07:27 UT N West Very thin and elongated loop front.
09:50 UT S Pole Very faint expanding loop front.
Time of the last C2 image analized: 12:06 UT.
Web curator:
K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771