UVCS MISSION LOG ---------------- Date: 25 May 2007 ----- Last revision: 31 May 2007 (Wu) -------------- File Name: 2007.05.30.a.log ---------- Compiled by: R. Wu ------------ UVCS Activity: UVCS in Modified Hard Safe Configuration -------------- SOHO Activity: -------------- 29 May 2007 SK/MM/Roll TIMELINE Last Update: 24 May 2007 EBZ Standard Disclaimer: All times are in UT and are estimates. Total Fuel Usage: 62.75 grams OCD (offpoint flag, SVM times, ESR flags) due Thursday 24 May SORR on Friday 25 May at 11am Limit violation sheets for safing due on Friday 25 May TUESDAY -- MAY 29 2007 ---------------------- D45/D46 04:15-05:45 UT D24 17:55-02:10 UT SOC here from 17-02 UT SWAN safed by FOT, remove SWAN from ESR warning flag list MDI loop opened by FOT with warning ~18:30 UT Experiment offpoint flag function disabled Roll/SK/MM: SK (~8 minutes), MM (~37 minutes), roll (~26 minutes) Burns should be complete by ~20 UT Experiment offpoint flags enabled for LASCO and MDI MDI loop closed by FOT after asking permission SWAN recovered by FOT, return SWAN to ESR warning flag list - 2 h after last burn, send n_fl_manrec WEDNESDAY -- MAY 30 2007 ------------------------ D43 01:50-05:50 UT *D/L only* D54 10:55-12:55 UT D15/D27 22:00-01:50 UT SVM Reserve Time on D54 SOC here from 22-02 UT CDS recovery at 22 UT CDS returned to the ESR flag warning list CDS load LASCO recovery at 23:30 or 00:00 LASCO load EOF Staff: R. Wu: Lead Scientist ---------- R. Wu: Commander Y.-K. Ko Command file: No Commanding Activity: --------- 1) UVCS in Modified Hard Safe Configuration Sequence: None SCI_SPEC: Following completion of Science Observations, UVCS is placed into a modified Hard Safe configuration in preparation for the SOHO High Gain Antenna Keyhole Period of May - June 2007. OVI and LyA Slits are set to 100 microns, instrument is rolled to nominal East (35156 Engineering Units). Detector High Voltage is ramped down and then turned off. The Mirror is moved to 1.5 Solar Radii with 1.5 mm overocculting. UVCS Aperture Door is also closed 708 steps, Internal Mirror / Occulter Heater set to 100% duty cycle (64). FOT using ESR Limit Set, TSU Substitution Heater (Circuit #84) powered on and set to 50% duty cycle. UVCS removed from Experiment Offpoint and ESR warning lists for Keyhole. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2007.05.30.16:00 end: 2007.05.31.16:00 ONUMs = 23390 Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 180 Degrees - Roll: 270 Degrees (35156) - Mirror/Occulter: 1.5 Ro 1.5 mm overocculting - LYA Slit: 100 um - OVI Slit: 100 um - LYA GRTPOS: 100000 - OVI GRTPOS: 164600 - LYA HIGH VOLTAGE RAMPED DOWN AND POWERED OFF - OVI HIGH VOLTAGE RAMPED DOWN AND POWERED OFF - VLD HIGH VOLTAGE RAMPED DOWN AND POWERED OFF - LYA DETECTOR POWERED OFF - OVI DETECTOR POWERED OFF - VLD DETECTOR POWERED OFF - LYA mask: LYA_chk_1xfull in slot 6 - OVI mask: OVI_chk_1xfull in slot 6 Fits Files: GAP between 05/30/07|12:54:39(15055) and 05/30/07|22:03:14( 2222) GAP between 05/31/07|01:49:48( 7607) and 05/31/07|02:09:54( 9532) GAP between 05/31/07|04:09:41( 4663) and 05/31/07|04:42:36( 7819) GAP between 05/31/07|05:39:52(13327) and 05/31/07|06:26:57( 1458) GAP between 05/31/07|12:44:47( 4999) and 05/31/07|17:12:57(14372)