LASCO Activity Report for
September 15, 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

SOHO entered the Telemetry keyhole on 2004/09/11. It will last until
2004/10/06.

LASCO is loaded with the 2 hr cadence in C2 and C3 pB orange filter binned
full field (FOV) LEB summed.  This will be part of the CME Watch in LASCO
pB program to run the duration of this keyhole. This kicked off 9/10
22:30 UT and continues through 10/3 12:00 UT.

EIT 195 CME was interrupted on 2004/09/10 (Friday) at 20:00 UT for EIT CCD
bakeout calibrations. EIT CCD bakeout between 2004/09/10 @ 22:00 UT - 
2004/10/03 (Sunday) @ ~22:00 UT.

2004/09/14 (Tuesday)

01:24 UT  E Limb	Ragged loop front developing slightly toward ESE. It is
			followed at 03:12 UT by a loop front a little bit to S.
			An apparently twisted feature with an initially bright
			top follows (04:36 UT) at roughly the PA of the second
			loop, and slightly expanding toward SE.	

08:24 UT  E Limb	Faint and not well defined loop front. Its development
			seems to be affected by the following event.

10:12 UT  S East	Initially bright ragged loop front preceded by a much
			fainter and diffuse ragged front. An apparently 
			different front seems to develop toward SSE. By 11:12 
			UT, an extremely faint loop front develops toward E,
			partly superposed in the LOS with the trailing material
			of the first front mentioned. Starting at 11:18 UT, C3
			shows a ragged loop front developing toward SE, and
			another (fainter) loop front developing toward SSE a
			little bit farther out. Further development missed by 
			the following data gap. GOES recorded an M1.5 X-ray 
			flare from NOAA AR 10672 (N03E16) between 07:47 - 10:00
			UT with peak emission at 09:30 UT. 

10:48 UT  NN West	Ragged and diffuse loop front.

	13:13 - 18:12 UT	Temporary DSN Data Gap.

18:24 UT  S East	Small and faint ragged front already under development.
			It fades throughout C3.

21:36 UT  S East	Slow development of a blob-like feature that fades
			throughout C3. Difficult to give an exact time of 
			first appearance.

2004/09/15 (Wednesday)

01:36 UT  S East	Ragged and not well defined faint loop front.

02:12 UT  E Limb	Very faint loop front.

	06:45 - 13:55 UT	Temporary DSN Data Gap.

	17:15 - 22:45 UT	Temporary DSN Data Gap.