LASCO Activity Report for
June 3, 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

* Telemetry Keyhole (SOHO will stay in TM Submode 5 during the Keyhole): 
  2005/06/05 - 2005/06/25: 26 m
  2005/06/09 - 2005/06/20: 34 m

* 2005/05/05: End of MEDOC Campaign.

* Mercury entered the C2 FOV from the right on 2005/06/02 @ 00:32 UT.

* 2005/05/30 - 2005/06/03 between 06:00 - 09:00 UT:  
  C2 Plumes Study: "Microflares, Jets and Macrospicules in and Around PCH".
  During this time: C2 orange/clear subfield images at a 5 min cadence.  
  FOV 14x16 LOCS block region over the South Pole.
  --> No LASCO CME watch during the time of the run.

* 2005/05/28 - 2005/06/05: LASCO Extra PBs for 3D CME Study.
			   During this time (for the CME watch): 
			   - only 1 C2 Orange/Clear per hour;
			   - only 1 C3 Clear/Clear per hour; and
			   - No EIT CME Watch (only synoptic: 4 EIT 195 per day).

* Medoc Campaign started on May 16. Since then SOHO is in Telemetry submode 5.

2005/06/02 (Thursday)

	  W Limb	Slow development of a system of faint loops since 
			late on previous day.

00:32 UT  E Limb	Bright ragged front already half way to the end of the
			C2 FOV. GOES recorded a C7.2 X-ray flare late on
			previous day from NOAA AR 10772 (S17E38), between
			22:03 - 22:25 UT with peak emission at 22:18 UT.

02:32 UT  E Limb	Small front just appearing. It develops as a bright
			ragged front by 03:32 UT.

	06:00 - 09:00 UT	C2 Plumes study. NO LASCO CME watch images. 
				(see on top "Points of Interest").

13:32 UT  E Limb	Another bright ragged front. Extremely faint extensions
			can be guessed to S. GOES reportes a B8.7 X-ray flare 
			on NOAA AR 10772 (S17E31) between 12:01 - 12:23 UT with
			peak emission at 12:10 UT.

18:32 UT  W Limb	Faint and diffuse loop front superposed in the LOS with
			the slow development of a system of faint loops.
			Difficult to give an exact time of first appearance.
			It was first seen in C3 at 20:38 UT, developing slightly
			toward WSW.

19:32 UT  ES East	Diffuse and ragged front. It fades relatively close to
			the inner edge of C3.

2005/06/03 (Friday)

01:32 UT  ES East	Very elongated loop-like front. It fades throughout C3.

04:32 UT  ES East	Diffuse loop-like brightening (some signatures already 
			in previous frame, by 03:32 UT). Inpection of the C2
			Orange/-60 deg sequence shows the diffuse front first
			appearing at 04:09 UT, followed by a brighter ragged
			loop front at 05:09 UT (though by 04:49 UT some
			brightening can already be seen). In this sequence, this
			loop front appears much brighter above the E limb.
			Signatures of the event are gone after the data gap. 
			GOES reported on NOAA AR 10772 the following events:
			- a C3.1 X-ray flare (S17E21) between 01:53 - 02:38 UT
			with peak emission at 02:24 UT, and
			- an M1.3 X-ray flare (S17E22) between 04:03 - 04:16 UT
			with peak emission at 04:11 UT.

	06:00 - 09:00 UT	C2 Plumes study. NO LASCO CME watch images. 
				(see on top "Points of Interest").

10:49 UT  EN East	(Time of C2 Orange/-60 deg): Faint and diffuse ragged
			loop front. The front is completely surpassed by a very
			bright and big loop front by 12:49 UT (time at which
			this big loop front is first seen, its LE being already
			at the end of the C2 FOV).

Time of the last C2 image analyzed: 13:32 UT.