LASCO Activity Report for
April 28, 2005 SOHO Science Daily Meeting

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.

2005/04/27 (Wednesday)

00:50 UT  S West	Expanding and ragged loop front superposed in the LOS
			with event reported to start at 20:26 UT on previous
			day. Some expanding ragged fronts follow. Difficult to
			disentangle the different features that almost
			continuously show up.

01:50 UT  SS West	Faint expanding loop front partly superposed with
			event reported to start at 00:50 UT on SW. The event
			at 00:50 UT develops faster.

05:50 UT  S East	Wide and bright ragged loop front. EIT 195 images 
			show a filament-based eruption from around W edge
			of NOAA AR 10756 between 05:00 - 07:13 UT.

08:50 UT  W Limb	Faint ragged front. Difficult to disentangle it from
			other features under development by the time.

12:26 UT  ES East	Extremely faint and diffuse front, barely discernible.
			EIT 195 images show eruption from W edge of NOAA AR
			10756 between 11:36 - 13:25 UT.

13:27 UT  NN East	Faint spray-like front that fades throughout C2.

16:04 UT  ES East	Bright and slightly asymmetric ragged front preceded
			by a diffuse an elongated brightening. It fades
			throughout C3.

23:06 UT  WS West	Faint and diffuse (small) loop front that fades
			throughout C2.

2005/04/28 (Thursday)

00:06 UT  S East	System of expanding loop fronts. Inner material
			apparently pushing the outer fronts. EIT 195 running 
			difference images show by the time a tenuous signature 
			of a CME above the SE limb.

02:26 UT  S West	Bright and ragged loop front with structured interior.
			The event is preceded by a very faint front on SSW that
			is first inferred at around 23:50 UT on previous day.

Time of the last C2 image under analysis: 12:06 UT.