LASCO/EIT Operations Status Daily Reports -- August 1997 31-Aug-1997 (C1-C2-C3-EIT synoptic; LASCO doors closed) 2300 All LASCO doors closed prior to momentum management 30-Aug-1997 (C1-C2-C3-EIT synoptic) 29-Aug-1997 (C1-C2-C3-EIT synoptic) 28-Aug-1997 (C1-C2-C3-EIT synoptic) NRT test of Sept. 45 deg. roll program and Flush Activity Buffer 27-Aug-1997 (C1-C2-C3-EIT synoptic; LEB REBOOT) NRT C1 Sum Img test caused SCCB fault (recovered) l_set_lobt executed 23:11 UT; caused unusual time fault in Alerts LEB power cycled at 23:36 UT 26-Aug-1997 (C1-C2-C3-EIT synoptic; NRT testing) C1 FP in-line Check and Correct tested in NRT ~19:55 UT EIT Summ/Diff program tested unsuccessfully; program caused SCCB pointer problem (recovered) 25-Aug-1997 (C1-C2-C3-EIT synoptic; EIT H-Comp. testing in NRT) C2 and C3 "Equatorial" images deleted from the synoptic program (unnecessary with H-Compression routine) 24-Aug-1997 (C1-C2-C3-EIT synoptic; FeX North Polar Plumes study; SOHO-25) Kreutz Comet-SoHO 25 discovered in both C3 and C2 data by K. Schenk C3 8 sec exposures taken for calibration with Alpha Leo. 23-Aug-1997 (C1-C2-C3-EIT synoptic; FeX N. Polar Plumes resumed; image problem) C3 8 sec exposures taken for calibration with Alpha Leo 13:18 EIT 304A image was "dark" 22-Aug-1997 (C1-C2-C3-EIT synoptic; Alpha-Leo C1 calibrations program) C1 multi-step line scans taken in all five filters for calibration. 21-Aug-1997 (C1-C2-C3-EIT synoptic; C1 FeX North Polar Plumes Study) Alpha-Leo in C1 field of view at 23:00 UT. Preparations and NRT testing for Alpha-Leo C1 calibrations program made. CaXV exposures with detectable signal taken in NRT 20-Aug-1997 (C1-C2-C3-EIT synoptic; C1 FeX North Polar Plumes study) Polar plumes consisting of 3-90 minute blocks using 2 different line scan sequences from the same DPT table with the use of the new indexing feature included in the OBE-222 load. EIT is running North Polar Plumes at a 17 min. cadence interleaved with the CME watch and the C1 plume scans. 19-Aug-1997 (C1-C2-C3-EIT synoptic; extended C1 table tests) NRT testing of extended (>10 positions) C1 wavelength tables 18-Aug-1997 (C1-C2-C3-EIT synoptic; TM Submode 5 transition) TM Submode 6-to-5 transition ~17:00 UT 17-Aug-1997 (C1-C2-C3-EIT synoptic; TM Submode-6) OBE-weirdness of previous day seems to have cleared 16-Aug-1997 (C1-C2-C3-EIT synoptic; TM Submode 6) LEB skipped one C3 Seq PW on 15 Aug 1997 and some OBE time weirdness through past 24 hours continuing C3 8-sec. exposures for alpha Leo 15-Aug-1997 (C1-C2-C3-EIT synoptic; TM Submode 6 transition) TM submode 5-to-6 transition at 19:00 UT 14-Aug-1997 (C1-C2-C3-EIT synoptic; C3 short exposures) alpha Leo (Regulus) visible in C3 field of view C3 8-sec exp. for a-Leo calibrations, beginning ~20:30 UT 13-Aug-1997 (C1-C2-C3-EIT synoptic; C1 door movements; C1 calib.) C1 calibrations (door open) 02:05-06:00 UT C1 aperture door closed 17:13 UT C1 calibrations (door closed) 18:20-20:50 UT C1 door opened 20:53 UT 12-Aug-1997 (C1-C2-C3-EIT synoptic) EIT sequences, all wavelengths, to support SHUTTLE payload and calibrations, 16:55-17:30 UT. 11-Aug-1997 (C1-C2-C3-EIT synoptic; SEM rocket support; C3 Seq. PW) EIT sequences, all wavelengths, to support SEM payload 18:05-18:47 UT extra C3 Seq. PW obs. added (every ~6 h) through 12 August 1997 10-Aug-1997 (C1-C2-C3-EIT synoptic) 09-Aug-1997 (C1-C2-C3-EIT synoptic) 08-Aug-1997 (C1-C2-C3-EIT synoptic; TM Submode 6-to-5 transition) TM Submode 5 reenabled 18:58 UT 07-Aug-1997 (C1-C2-C3-EIT synoptic) continued FeX/XIV and EIT full-field plume studies 06-Aug-1997 (C1-C2-C3-EIT synoptic) C1 FeX and FeXIV polar plumes study with EIT 171, 284, 195 using 2X 'medium sun' exposure settings. FeXIV and FeX high cadence exposures series taken at 08:00 UT to be co-added for high resolution images. 05-Aug-1997 (C1-C2-C3-EIT synoptic; enhanced C2/C3 seq PW cadence) extra C2/C3 Seq PW observations starting 23:00 UT 04 August partial-field C2 color, Pb measurements of Comet SOHO-19 (between 16:50-19:50 UT) 04-Aug-1997 (C1-C2-C3-EIT synoptic; OBE testing, TM Submode-6, Comet SOHO-19) Transition to Submode 6 (15.8 kb/s) at 13:00 UT till Aug 8, 1997 Kreutz Comet SOHO-19 discovered in C3 data by S. Stezelberger Continued new OBE load testing using: Dynamic Imaging of C1 subfield, Command table capabillity from the planning tool, EIT threshold imaging, which is used to put limits to pixel counts, EIT masking tests performed through the planning tool. 03-Aug-1997 (C1-C2-C3-EIT synoptic) 02-Aug-1997 (C1-C2-C3-EIT synoptic) 01-Aug-1997 (C1-C2-C3-EIT synoptic)