VENUS is expected to enter the C2 FOV from the left on 2004/06/07 (Monday) at around 13:20 UT. VENUS entered (from the left) the C3 field of view on 2004/06/03 (Thursday) at around 16:00 UT. SOHO Telemetry Submode changed to Submode 5 on 2004/04/13 at 16:00 UT (SUMER began observing on 2004/04/14). SUMER campaign runs until 2004/06/17. In other words, LASCO synoptic observation plan cadence remains the same but the EIT CME watch images will be reduced to half-resolution (512x512) during that period.
02:26 UT W Limb Fan-like front developing toward WNW. It is surpassed in the C3 FOV by the event reported to start at 07:50 UT. 06:50 UT WS West Narrow ragged loop front, surpassed later by event reported to start at 07:50 UT. 07:50 UT W Limb Complex event: Very bright loop front (1) above the W limb, with the typical appearance of a limb event. At 08:06 UT an apparently 2nd front (2) can be discerned in the NW quadrant of C2 with its LE ahead of the loop front. By 09:26 UT faint extensions surround almost the C2 occultor, spanning ~ 260 deg from PA 165 - 65. It is difficult to establish their association to the features aforementioned. EIT Fe XII running difference images show signatures of a CME above the W Limb starting at 07:36 UT, apparently originated on the far side of the Sun, though relatively near the limb. Starting at 07:48 UT an intensity disturbance is seen to travel toward N and S (always above the limb) as the event develops. Given the fact that no visible signatures are seen on the disk, nothing can be said about their likely association. Likewise, GOES recorded no significant X-ray activity during the day. Therefore, from a global point of view, this event could be catalogued as a 'partial' (almost 'full') halo CME, backsided. Gusty outflow follows on WNW Limb along the day. 15:00 - 17:00 UT Special LASCO C3 Venus Observations. No EIT images.
02:06 UT WS West Ragged 'flat' loop front. It fades throughout C3. 06:26 UT WS West Bright spray-like front. It surpasses previous event in the C3 FOV by ~07:32 UT, fading afterward. Couple of faint ragged loop fronts above the W Limb by 07:27 UT. 09:06 UT N Pole Bright and wide loop front. It fades throughout C3. 09:06 UT N East Elongated spray-like front just to S of the north eastern leg of previous event. It is followed by a similar front at 11:50 UT. By 14:50 UT a ragged loop front follows. They all fade throughout C3. 16:06 UT NN West Slow development of a faint ragged loop front. 18:26 UT NN East Couple of wide loop fronts that quickly surpase event reported to start at 16:06 UT in the C2 FOV. 21:00 - 23:00 UT Special LASCO C3 Venus Observations. No EIT images.
00:06 UT EN East Bright and narrow spray-like front just to S of the leg in the NE quadrant of event reported to start at 18:26 UT on previous day. It fades throughout C3. 06:26 UT W Limb Fairly faint narrow loop front. It fades throughout C3. 15:00 - 17:00 UT Special LASCO C3 Venus Observations. No EIT images. 17:26 UT W Limb Fairly faint couple of loop fronts developing toward W and N. Not well defined front. They fade close to the inner edge of C3.
01:26 UT S West Wide loop front with apparently twisted inner structure. Faint front ahead of the loop and to N. By 03:50 UT extremely faint extensions seem to surround completely the C2 occultor. GOES observed a C-class X-ray event early on the day associated with NOAA AR 10621, by the time at S17W42. EIT Fe XII running difference images show a big CME signature traveling SW starting at around 00:12 UT from AR 10621. 08:50 UT N East Ragged elongated loop front. 11:50 UT WS West Faint elongated front.