LASCO Activity Report for
August 21, 2006 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

KEYHOLE Operations: 
-------------------
2006/08/21 - 2006/09/19 : 26 m Keyhole
2006/08/28 - 2006/09/13 : 34 m Keyhole

- 2006/08/19 - 2006/09/16 : EIT CCD Bakeout

- LASCO will be recorded during DSN gaps confirmed thru 08/23...
  possibly thru 8/27+ (TBC). 

- 12 minutes cadence for C2 during Keyhole.

2006/08/18 (Friday)

	NO LASCO C2/C3 CME watch during 2006/08/18 due to 
	a special Observation campaign with EIT (7 minute 
	high cadence run in 304A until 08/18 22:00 UT, 
	afterward CCD EIT Bakeout).

2006/08/19 (Saturday)

	First C2 image taken at: 01:38 UT
	First C3 image taken at: 01:42 UT

03:12 UT  W Limb	Extremely faint ragged front, barely discernible
			from the background.
 
03:36 UT  E Limb	Faint and diffuse loop front. It fades throughout C2.

12:12 UT  EN East	Faint fan-like front immediately followed to S by a
			faint and diffuse front. Another one on E at 14:24 UT.
			They all fade throughourt C2.

15:12 UT  ES East	Diffuse brightening along streamer.

17:00 UT  W Limb	Slow development of a system of faint loop fronts.
			Difficult to give an exact time of first appearance.
			It develops as a big twisted structure by the end of 
			the day. Pseudo-continuous outflow superposes in the
			LOS. Multiple B-class X-ray activity since midday
			from NOAA Ar 10904 (around S15W58). Also a C2.3 X-ray
			flare from AR 10904 (S13W59) between 21:13 - 21:23 UT
			with peak emission at 21:19 UT.

19:36 UT  E Limb	Ragged loop front that fades very close to the inner 
			edge of C3.

2006/08/20 (Sunday)

08:12 UT  S West	'Pair formation' in the trail of the event reported
			to start at 17:00 UT on previous day. Also some 
			infalling material on WNW.

10:00 UT  WN West	Slow development of a system of faint loop fronts.
			It develops as a twisted structure. Pseudo-continuous
			outflow superposed in the LOS.

13:00 UT  S West	Bright loop front followed by bright twisted material.
			A bright ragged front can be seen by 16:48 UT in 
			the trailing material. GOES recorded a C2.9 X-ray
			flare on NOAA AR 10904 (S16W75) between 16:27 - 16:34 
			UT with peak emission at 16:32 UT.
			
14:36 UT  W Limb	Diffuse loop front that fades throughout C2.

22:00 UT  WN West	Ragged front in the trail of the event reported to 
			start at 10:00 UT.

2006/08/21 (Monday)

12:24 UT  S East	Diffuse loop front.

Last C2 image available by the time of writing: 13:36 UT.