LASCO Activity Report for
November 1, 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

- 2006/10/22: Venus started to be visible in the C2 FOV 
              (upper right quadrant, moving from right to left).

2006/10/31 (Tuesday)

04:30 UT  N Pole	Faint and diffuse front all above the N Pole extending
 			up to the E limb (1). A brighter feature (ragged front)
 			shows up on the W at 05:06 UT with some faint and
			diffuse extensions (2) to S up to the E Limb. All
 			together, the event looks like a full halo event 
			by this time ((elliptical shape), the signal being
 			barely above the limb on the S Pole. Feature (1) is
			first seen in C3 at 05:18 UT, all above the E limb 
			and N Pole. Feature (2) shows up on W at 06:42 UT, 
			and at 08:18 UT the C3 occulting disk appears fully
 			surrounded (difficult to establish the relationship
			between features (1) and (2)). The mean plane-of-sky
 			speed of the  outermost part of the LE of the complex
 			event at different position angles is shown below 
			(based on C3 data):
			- PA 085: ~ 450 km/sec (showing slight deceleration)
			- PA 310: ~ 670 km/sec (showing slight deceleration)
			- PA 204: ~ 210 km/sec (showing slight deceleration),
 			most likely related to Feature (1).
			No frontsided signatures prior to the event on EIT 
			195 images, nor significant X-ray events were reported
 			by the time. However, EIT 195 images seem to show the
 			apparent slow lift-off of a prominence on NW between
 			03:48 - 11:12 UT, though it is really hard to say 
			due to its faintness and size. In summary, the event 
			has therefore been determined as a full Halo Event
			probably backsided based on the lack of significant
 			frontsided activity. However please be aware that EIT
		 	195 images did not show signatures of a backsided 
			event either.

	19:54 - 24:00 UT 	NO LASCO CME watch due to special observation
				program for Mars Express and Venus Express 
				Campaign.

2006/11/01 (Wednesday)

	  E Limb	Slow development of a system of faint loop fronts 
			since previous day.

05:54 UT  N Pole	Jet-like front.

Last C2 image available by the time of writing:  12:06 UT.