Kreutz comet in the C2 FOV entering from S (a little bit to the left of the center of the image) at 13:27 UT on 2004/12/03. It fades out by 18:06 UT. SOHO Telemetry Submode changed back to Submode 5 on 2004/12/01 @ ~ 19:00 UT. EIT 195 CME watch at half resolution (512x512) since then. After the EIT Shutterles Campaign and while in Submode 6, EIT 195 CME watch at full resolution (1024x1024). SOHO Telemetry Submode changed to Submode 6 at 14:00 UT on 2004/11/30 (EIT Shutterless Campaign between 17:00 - 19:40 UT). It will be back to Submode 5 on 2004/12/01 at 19:00 UT. SOHO is in Telemetry Submode 5 since 2004/11/08 @ 22:15 UT. While in Submode 5, half resolution EIT 195 CME watch (512x512).
00:26 UT HALO The event is first seen in C2 at 00:26 UT already surrounding the occulting disk. In particular, a brighter feature can be discerned developing above the N Pole - NE with faint extensions extending a little further out, and all the way through the western hemisphere, S Pole (most faint), and eastern hemisphere. The event is first seen in C3, all above the N Pole by 00:42 UT. The event looks extremely faint in the S - SE region of the C3 FOV during the whole development. The mean plane-of-sky speed of the LE of the outermost layers of the event at several PA is given below (based on C3 data, all cases showing practically no acceleration): PA 002: 937 km/sec; PA 076: 1074 km/sec; PA 267; 773 km/sec; PA 326: 1150 km/sec. GOES reported an M1.5 X-ray flare on NOAA AR 10708 (N08W02) between 23:44 (on Dec.02) - 00:35 UT with peak emission at 00:06 UT, which was clearly associated with the coronagraph event. EIT 195 images show a strong brightening on NOAA AR 10708 just starting at 23:48 UT (on Dec.02), followed by a rather circular intensity disturbance traveling away from the AR, and a relative large dimming region on NW of the AR (and also to E). Nice post-flare loops. A filament previously 'winding' through the region cannot be seen any longer. In summary, the event has therefore been determined as a 'full' halo CME event, frontsided. 13:50 UT S West Small blob-like front. Difficult to give an exact time of first appearance. More later above W and NW limbs. Also infalling material. 19:27 UT E Limb Small diffuse front that quickly fades.
W Infalling material and corresponding small blobs coming out in the Western hemisphere all along the day. 10:06 - 14:50 UT Temporary Data Gap 16:26 UT E Limb Very faint and elongated loop front. It fades in C3.
W Infalling material and corresponding small blobs coming out in the Western hemisphere all along the day. Otherwise, mostly quiet Sun.
W Infalling material and corresponding small blobs coming out in the Western hemisphere all along the day. Otherwise, mostly quiet Sun. Last C2 image analyzed: 12:06 UT