
LASCO Activity Report for
February 19, 2008 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
KEYHOLE Operations:
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Mon 02/04 - Sun 03/02: 26 m keyhole
Mon 02/11 - Sun 02/24: 34 m keyhole
- EIT CCD Bakeout scheduled for 02/22 ~ 21:00 UT thru 02/28 ~ 22:00 UT.
- S/C Maneuvers (SK and MM) scheduled for 02/19.s
- LASCO will safe for S/C Maneuvers on 02/19 ~ 13:30 UT and recover on
02/21 ~ 22:30 UT.
- S/C Roll scheduled for 02/22 15:50 - 21:50 UT. LASCO will close doors
for the Roll due too offpointing protection being disabled during the
maneuver (estimated time of closed doors: 02/22 16:00 - 19:30 UT).
EIT will observe the Roll.
- During telemetry outage periods for this Keyhole LASCO and EIT will
not be recorded (and instruments will remain idle).
2008/02/15 (Friday)
00:06 - 01:30 UT LASCO Data Gap (C2 time).
01:30 UT E Limb Slow development of a system of faint loop
fronts. By 04:54 UT, the top of an inner core
starts to be discernible. After the following
data gap. a twisted structure can be seen
developing. WIDTH in C3 by 12:42 UT: ~40 deg.
06:06 - 09:30 UT LASCO Data Gap (C2 time).
13:06 - 21:30 UT LASCO Data Gap (C2 time).
2008/02/16 (Saturday)
16:06 UT EN East Slow development of a faint front towards E
(gradual event). Twisted trail. WIDTH in C3
at 02:18 UT: ~25 deg.
23:54 UT EN East Faint and very diffuse front in the trail of
previous event.
2008/02/17 (Sunday)
12:54 UT S East Diffuse fan-like front.
12:54 UT S West Jet-like front followed by a faint and narrow
fan-like front.
13:31 UT N Pole Diffuse and narrow spray-like front.
16:06 - 19:30 UT LASCO Data Gap (C2 time).
2008/02/18 (Monday)
14:30 - 24:00 UT LASCO Data Gap (C2 time).
2008/02/19 (Tuesday)
00:00 - 01:31 UT LASCO Data Gap (C2 time).
01:31 UT S West Narrow and very elongated loop-like front
already under development.
06:54 - 12:06 UT LASCO Data Gap (C2 time).
Last C2 image available by the time of writing: 12:30 UT
Web curator:
K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771