00:54 UT NN East Very faint (apparently expanding) loop front. Not discernible in C3. 01:31 UT WS West Initially bright and elongated feature that fades throughout C3. 03:06 UT S Pole Faint loop front that fades throughout C3. 09:54 UT W Limb Ragged front. 12:00 - 18:00 UT NO LASCO CME watch program due to special C2 observation program (polar coronal hole/ plumes study in the SOUTH: orange filter at 100 sec exposure with a 5 minute cadence of the upper paret of the FOV -1024x416-).
04:30 UT E Limb Full Halo Event. First seen as a very bright loop front on the E Limb with diffuse extensions that surround completely the C2 occulting disk by the time of first appearance (04:30 UT). The bulk of the CME (i.e., the brighter part of the front) develop toward E as projected onto the plane of the sky, while the diffuse extensions expand simetrically all around the occculting disk. The event was first seen in C3 at 05:18 UT, all above the E Limb. The diffuse extensions start to be seen on W by 05:18 UT, and by 06:18 UT the C3 occulting disk appears fully surrounded (signal on N barely above the occulting disk). The mean plane- of-sky speed at PA ~90 deg amounts ~ 570 km/sec, while at PA ~260 deg the mean plane-of-sky speed is about ~620 km/sec (LE very diffuse and faint). Both determinations were based on C3 data, and the height-time profile shows practically no acceleration). GOES recorded no significant X-ray activity prior and during the LASCO event (A-level). EIT 195 running difference images show, by around 04:36 UT above the ENE Limb, what appears to be very faint signatures of a backsided CME. No significant activity on the disk. In summary, the event has therefore been determined as a full halo event, most likely backsided. Last C2 image available by the time of writing: 12:00 UT. 12:00 - 18:00 UT NO LASCO CME watch program due to special C2 observation program (polar coronal hole/ plumes study in the SOUTH: orange filter at 100 sec exposure with a 5 minute cadence of the lower part of the FOV -1024x416-).