KEYHOLE Operations: ------------------- 26 m keyhole: 2007/05/18 - 2007/06/05 34 m keyhole: 2007/05/21 - 2007/06/01 While in Keyhole, improved cadence in LASCO C2 (12 min) and LASCO C3 (30 mins). EIT CCD Bakeout starts on 2007/05/18 @ ~15:00 UT and ends on 2007/06/05. Spacecraft Maneuvers on Tuesday 2007/05/29. (Station Keeping, Momentum Management, and 180 deg Roll. LASCO will safe on 2007/05/28 @~ 12:00 UT and will recover on 2007/05/30 @~ 23:00 UT.
00:00 - 05:06 UT LASCO Data Gap (C2 time). 05:06 UT W Limb Faint wisted structure can be discerned, following the event reported to start at 16:30 UT on previous day. 20:36 - 24:00 UT LASCO Data Gap (C2 time).
13:24 UT W Limb Diffuse and wide faint loop front (see next entry). 13:48 UT N West Ragged expanding front -hereafter Front 1- at the northern leg of previous event -hereafter Front 0- (by this time Front 0 is almost at the edge of the C2 FOV). A very ragged front -hereafter Front 2- seems to follow behind by around 14:36 UT, quickly spanning up to well past the N Pole. Front 1 (and 0) are first seen in C3 at 14:42 UT (front 1 just just appearaing); Front 2 does it at 16:18 UT. By 20:42 UT, the complex event is no longer discernible in the C3 FOV (outermost part -on NW- below 14 solar radii). GOES reported a B9.5 X-ray flare from NOAA AR 10956 (~ N03W07) between 12:48 - 13:19 UT with peak emission at 13:02 UT. NO EIT images available (EIT in CCD bakeout mode).
06:48 UT SS West Expanding loop front. Extremely faint extensions seem to surround the C2 occulting disk, starting at about 07:36 UT. The event is first seen in C3 just appearing above the SSW limb at 08:18 UT. The C3 occulting disk seems to be fully covered by 12:18 UT (signal on NE just above the limb, and in fact extremely faint). By 13:42 UT the halo-like feature is not longer discernible, only the bulk of the CME (loop-like feature on SSW) remains discernible developing toward SSW (and only until around 15:42 UT (LE below 16 solar radii). The mean plane-of-sky speed of the LE of the loop-like feature at PA ~ 200 deg is ~ 280 km/sec showing practically no acceleration (based on C3 data). GOES reported a B6.7 X-ray flare from NOAA AR 10956 (~ N02W20) between 04:52 - 06:20 UT with peak emission at 05:56 UT. NO EIT images available (EIT in CCD bakeout mode).
01:12 - 05:48 UT LASCO Data Gap (C2 time). Last C2 image available by the time of writing: 07:24 UT.