LASCO Activity Report for
June 04, 2004 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

VENUS entered (from the left) the C3 field of view on 2004/06/03 
(Thursday) at around 16:00 UT.

SOHO Telemetry Submode changed to Submode 5 on 2004/04/13 at 16:00 UT 
(SUMER began observing on 2004/04/14). SUMER campaign runs until 2004/06/17.
In other words, LASCO synoptic observation plan cadence remains the same
but the EIT CME watch images will be reduced to half-resolution (512x512)
during that period.

2004/06/03 (Thursday)

05:50 UT  WS West	Narrow and ragged asymmetric front in the gusty outflow
			at the southern leg of event reported to start at
			23:15 UT on previous day. It fades throughout C3. It is
			preceded at 03:06 by a bright jet-like front that 
			fades throughout C2. 

09:50 UT  WN West 	Ragged loop front. It fades throughout C3.

12:06 UT  E Limb	Diffuse and ragged loop front. By 12:50 UT, on ESE Limb,
			a jet like front is first seen and evolves apparently
			accompanying the development of the ragged front in C2.

13:27 UT  W Limb	Bright ragged front with fairly faint loop-like
			extensions to N, developing slightly toward WNW. It 
			fades throughout C3. It is followed at 14:26 UT by a
			fan-like front, barely visible in C3. 

15:26 UT  S West	Slow development of a faint system of arcades apparently
			afected during its development in C2 by the event
			reported to start at 16:50 UT. At 18:26 UT a relatively
			brighter front appears and seems to push earlier
			features. No visible signature associated with the
			event on the disk as seen in EIT Fe XII.

16:50 UT  W Limb	Wide and bright loop front, cavity and trailing material.
			Typical limb event. Faint extensions to N. Difficult to
			discern whether they are part of the limb event or belong
			to the event reported to start at 15:26 UT. EIT Fe XII
			running difference images show a barely backsided event
			above the W Limb starting at around 16:12 UT. By 
			16:36 UT a bright feature is seen to develop toward NW. 

	17:00 - 19:00 UT	Special LASCO C3 Venus Observations. 
				No EIT images.

21:50 UT  N East 	Ragged and diffuse loop front.

2004/06/04 (Friday)

	00:00 - 05:50 UT 	Temporary DSN Data Gap.

06:50 UT  WS West	Narrow ragged loop front, surpassed later by event
			reported to start at 07:50 UT.

07:50 UT  W Limb	Bright and wide loop front, and cavity (under
			development).

	15:00 - 17:00 UT	Special LASCO C3 Venus Observations.
				No EIT images.