* First EIT 195 full res image after bakeout and calibrations: 2005/06/25 @ 01:40 UT. * LASCO is in Telemetry Submode 6 since 2005/06/23 @ ~ 15:30 UT. * 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 * 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.
00:00 UT N East Very faint and diffuse jet-like front that quickly fades. 07:24 - 14:00 UT Temporary Data Gap. 17:48 - 19:53 UT Temporary Data Gap. 19:53 UT NN West Elongated jet-like front developing toward NW. 20:54 UT E Limb Big ragged loop front. It fades throughout C3.
06:54 UT EN East Loop-front apparently seen alnmost edge-on preceding halo event (see next entry). 08:06 UT S Pole Very faint and diffuse front all above the S Pole. By (HALO) 08:30 UT, a bright 'folded-like' feature can be seen rising on ENE, and a faint loop-like front developing on W. By 09:06 UT, the C2 occulting disk is completely covered. The halo event was first seen in the C3 FOV at 08:42 UT, above the E - SE limb. The C3 occulting disk is fully covered by 09:42 UT (emission brighter on ENE). The mean plane-of-sky of the LE at several PA is given below (based on C3 data): . PA 024: 357 km/sec . PA 068: 429 km/sec . PA 119: 880 km/sec (LE very diffuse) . PA 159: 604 km/sec . PA 265: 581 km/sec showing in all cases practically no acceleration. GOES reported no significant X-ray activity by the time. However, it did report i) a C1.3, and ii) a B 4.3 X-ray flares on NOAA AR 10780 (around S09W33) with peak emissions at 03:46 UT and 04:04 UT, respectively. EIT 195 images show a relatively strong brightening on AR 10780 peaking at 03:48 UT. By 04:12 UT, some material seems to be ejected toward SW. Also by that time, a faint intensity disturbance can be seen on the south- east quadrant (on a quiet region of the Sun), apparently developing jointly with the event above the AR 10780. On the other hand, running difference images of EIT 195 show a very faint intensity disturbance above the E Limb at around 08:00 UT, extending toward S as it develops. Also, another one above the SW limb by 08:12 UT. Therefore, despite the frontsided activity observed on both AR 10780 and the quiet region on the southeastern quadrant (they seems to occur too early to be associated with the LASCO event), the event seems to be backsided (based on the faint signatures observed by the right time on the EIT running difference images). In summary, the event has therefore been determined as a full halo event, apparently backsided. 09:54 UT E Limb Slow system of loops starts to be seen on E in the aftermath of previous halo event. It develops as an expanding twisted structure (towards ENE). Gusty outflow follows.
07:31 UT N East Bright loop-like front just appearing. It develops as (HALO) a slightly asymmetric expanding loop front toward N (brighter on NE). By 08:06 UT, very faint extensions all above the S Pole make the event to look like a full halo event. The event was first seen in the C3 FOV at 08:18 UT, just appearing above the NE limb. The 'bulk' of the CME develops toward N, spanning all the way from the E limb, N Pole, up to the W Limb. By 09:42 UT, very faint extensions can be seen above the S Pole. The mean plane-of-sky of the LE at several PA is given below (based on C3 data): . PA 008: 475 km/sec . PA 048: 450 km/sec . PA 274: 444 km/sec showing in all cases a very slight deceleration. EIT 195 running difference images show signatures of a backsided CME starting at 07:36 UT above the E Limb. An intensity disturbance traveling toward N all above the NE limb can be seen afterward. GOES reported a B5.0 X-ray flare on N15E83 between 07:06 - 07:59 UT with peak emission at 07:36 UT, apparently associated with the signatures observed in EIT. In summary, and based on the appearance of the event in EIT running difference images (jointly with the lack of activity on the disk) the event has therefore been determined as an asymmetric full halo event, most likely backsided. Outflow follows on ENE. 14:30 UT E Limb Bright and narrow front. By 14:54 UT, a very faint expanding front with the southern leg at roughly the PA of this narrow front develops toward N.
04:06 - 06:30 UT Temporary Data Gap. 06:30 UT E Limb Bright ragged loop front already under development after previous short data gap. NOTE: Multiple B-class X-ray flares and one C2.8 X-ray flare during the day from a yet unnambered region on E (at about N14E85 in average). Time of the last C2 image analyzed: 12:30 UT.