LASCO and EIT observed a partial halo CME on 2001/10/22. The event was first observed in C2 at 18:26 UT as a bright loop front over the SE limb; by 18:50 UT front spanned about 190 deg around the C2 occulting disk from PA 72 to PA 264. The front first appeared unambiguously in C3 at 19:42 UT with maximal coverage of the C3 occultor by 20:18 UT. The plane of sky speed of the front was measured as 621 km/s at PA 123 (SE) with moderate deceleration through the coronagraphs' fields of view. The CME was most probably associated with an X1.2 X-ray flare in AR9672 between 17:43 and 18:09 UT with peak emission at 17:51 UT. EIT observed this flare between 17:48 and 18:24 UT, with peak emission at 18:00 UT. SEC places the flare at S18E16. Neither an EIT wave nor a dimming was observed in association with this event. Oct 25, 2001 Shift Report --------------------------- ACE solar proton fluxes were very high, following arrival of Monday's CME at about 0600GMT this morning. We stowed ACIS for the radiation passage at about 1000, so no action was taken. Current ACE flux is about 50,000, and we would not want to resume the observing program coming out of the belts if it continues that high. I will likely call a radiation telecon for late afternoon unless the ACE fluxes plummet by 3pm EDT. Oct 26, 2001 Shift Report ------------------------- Due to high solar radiation, "SCS 107 was run to safe the science instruments and stop the on-board loads at 2001:298:23:17." ACE fluxes were 35000-40000, so that 2.6e9 fluence could have accumulated IF we had performed just the first observation and then stopped the load at the next comm. Because this was anticipated prior to the pass, FOT/MP started work early and made a rebuild of next week's loads incorporating the final observation, obsid 1956 of SN1998BW, from the present schedule. This is now planned to resume tomorrow morning. NOTE THAT there was another CME yesterday, which will hit us Oct 27 or 28.