LASCO Activity Report for
June 15, 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

* SOHO Maneuvers: 2005/06/17
  - LASCO safes on 2005/06/16 (Thursday) at 15:30 UT.
  - Station keeping, Momentum management, and 180 deg Roll on 2005/06/17
    (burns should be complete by ~15:55 UT).
  - LASCO recovery on 2005/06/18 (Saturday) at ~18:00 UT (or slightly earlier). 

* During the KEYHOLE, LASCO will be in synoptic improved program (12 min 
  cadence C2, 30 min cadence C3), with little loss of telemetry throughout 
  due to the advanced recorder setup.

* 2005/05/06 - 2005/06/24: EIT Bakeout (==> No EIT CME Watch).
  EIT performed the long pre-bake calset (06/06 15:58-21:45 UT) and went 
  to heaters on at 21:52 UT. EIT will be in bake till June 24 @ 10:00 UT 
  and should resume imaging by (06/24) 20:00 UT.
 

2005/06/14 (Tuesday)

	
	00:00 - 09:12 UT	Temporary Data Gap.

09:12 UT  W Limb	Bright, wide, and ragged loop front developing toward
	  (HALO)	West, already past the outer edge of the C2 FOV. Faint
			ragged extensions can be seen all above the N Pole,
			toward NE, and E. Though extremely faint, they can 
			also be guessed above the S Pole. The event is caught 
			so advanced in the C2 FOV  because of a telemetry DSN
			data gap not filled yet (00:00 - 09:00 UT). The
			development of the event between 10:45 - 14:15 UT is 
			also missed because of another telemetry DSN Data Gap 
			not yet filled. The event was first seen in C3 at 
			09:18 UT already well above the W Limb. By 09:42 UT, 
			the C3 occulting disk appears completely surrounded
			by the faint extensions. The last C3 image available
			of the event at the time of writing corresponds to 
			15:42 UT (afterward, telemetry DSN data gap not filled
			yet). The mean plane-of-sky speed of the LE at PA 267 
			was ~ 560 km/sec (based on a few C3 frames), showing
			a very slight acceleration. There are no EIT images
			available (EIT CCD bake out under way: 2005/06/06 
			21:52 - 2005/06/24 20:00 UT). GOES reported a C4.2 
			X-ray flare on NOAA AR 10775 (N10W47) between 06:54 -
			07:56 UT with peak emission at 07:30 UT. The X-ray 
			event on AR 10775 was preceded by an impulsive B5.4 
			X-ray flare on NOAA AR 10776 (S08W43), which occurred
			between 05:10 - 05:22 UT (peak emission at 05:16 UT).
			SXI-GOES 12 images show a relatively strong brightening
			of an (inverted) S-shaped feature on AR 10775 coincident
			with the reported X-ray flare. In summary, the event has
			therefore been determined as an asymmetric Full Halo 
			CME, frontsided, associated to C-class X-ray activity 
			on NOAA AR 10775.

	10:36 - 14:24 UT	Temporary Data Gap.

16:00 UT  WN West	Bright and ragged loop front. GOES reported a C7.4 
			X-ray flare on NOAA AR 10775 (N11W61) between 15:22 -
			16:13 UT with peak emission at 15:48 UT. Due to the 
			DSN Data Gap it is uncertain at the time of writing 
			whether there was a partial or full halo associated 
			to the X-ray event.

	16:24 - 24:00 UT	Temporary Data Gap.
	

2005/06/15 (Wednesday)

	
	02:12 - 10:24 UT	Temporary DSN Data Gap.

Time of the last C2 image under analysis: 10:48 UT