LASCO Activity Report for
April 25, 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.

2005/04/22 (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.

02:26 UT  WS West	Very faint and diffuse front that quickly fades.

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 followed by a similar
			one on SSE at ~ 12:06 UT. 
	

2005/04/23 (Saturday)

01:27 UT  ES East 	Faint and not-well-defined front followed at ~02:50 UT
			on E by an apparently twisted feature. Slow development
			of a system of faint loops afterward. Event barely
			discernible in C3.

05:26 UT  N West	Bright and elongated loop front. It fades throughout
			C3.

12:50 UT  NN West	Several faint and ragged blob-like fronts. Some more
			later in the day. They all fade throughout C3.

20:06 UT  W Limb	Extremely faint loop front that fades throughout C2.

2005/04/24 (Sunday)

02:50 UT  N West	Very faint, diffuse and ragged front preceding a 
			diffuse and rather elongated feature at ~ 04:06 UT,
			the latter expanding toward N. Difficult to say whether
			the diffuse front at 02:50 UT is the same elongated
			feature starting at 04:06 UT.

08:50 UT  EN East	Very faint loop front.

	09:36 - 16:00 UT	Non-recoverable data gap apparently due to 
				a LEB (LASCO Electronic Box) memory error.

16:26 UT  NN East	Apparently twisted trailing material of an event
			that started during the data gap. An elongated and
			expanding loop front can be seen by the time developing
			in C3.
 
16:26 UT  EN East	Gusty outflow that most likely started during data gap. 
			
18:06 UT  EN East	The slow development of a system of faint loops can be
			seen superposed in the LOS with the gusty outflow. It
			is difficult to give an exact time of first appearance.
			By around 04:26 UT on next day, an expanding twisted
			structure can be discerned.

18:26 UT  E Limb	Faint loop front starts to be visible already half 
			way to the end of the C2 FOV.

2005/04/25 (Monday)

10:26 UT  NN East	Ragged and apparently twsited small feature.
	
Time of the last C2 image analized: 12:06 UT.