UVCS MISSION LOG ---------------- Date: 06 May 2008 ----- Last revision: 19 May 2008 (Wu) -------------- File Name: 2008.05.18.a.log ---------- Compiled by: M. Uzzo, R. Wu ------------ UVCS Activity: UVCS in Modified Hard Safe Configuration -------------- SOHO Activity: May 19 2008 SK/MM/Roll TIMELINE -------------- Last Update: May 16 12:30 UT Standard Disclaimer: All times are in UT and are estimates. Total Fuel Usage: 0.09210 kg OCD (offpoint flag, SVM times, ESR flags) due 14 May SORR on 15 May at 10:30am Limit violation sheets for safing due Thursday 15 May SUNDAY -- 18 MAY 2008 --------------------- D24 20:50 - 00:15 SOCs here at 20:45 UT SUMER already safed UVCS already safed as of May 8 LASCO safes (~30 minutes) ~21 UT CDS safes (~30 minutes) ~21:30 UT - use TSTOL c_fl_shutdoors CDS removed from ESR flag warning list (Maneuver Prep Script) MONDAY -- 19 MAY 2008 --------------------- D43/D46 00:30 - 02:30 D54 06:00 - 09:25 D24 14:50 - 23:20 D34 23:10 - 02:25 SOCs here at 12 UT SWAN safed by FOT: run n_fl_llockin, go to ESR limit set MDI loop opened by FOT with warning ~15:15 UT Experiment offpoint flag function disabled Roll/SK/MM: SK (11.7 minutes), MM (35 minutes), Roll (26 minutes) Burns should be complete by ~17:00 UT Experiment offpoint flags enabled for LASCO and MDI MDI loop closed by FOT after asking permission ~19:45 UT SWAN recovered by FOT (2 hours after last burn): go to nominal limit set, run n_fl_llockout, send n_fl_manrec EOF Staff: R. Wu: Lead Scientist ---------- R. Wu: Commander M. Uzzo: Planner 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 2008. 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: 2008.05.18.16:00 end: 2008.05.19.16:00 ONUMs = 24414 Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 0 Degrees - Roll: 90 Degrees (35156) - Mirror/Occulter: 1.5 Ro 1.5 mm overocculting - LYA Slit: 100 um - OVI Slit: 100 um - LYA GRTPOS: 100000 - OVI GRTPOS: 210000 - 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_wing_100 in slot 5 - OVI mask: OVI_EclipSyn_215 in slot 2 Fits Files: GAP between 05/18/08|10:29:41( 4575) and 05/18/08|20:52:38(15268) GAP between 05/19/08|00:10:43( 1530) and 05/19/08|00:39:38( 4307) GAP between 05/19/08|02:24:56(14431) and 05/19/08|06:02:53( 2593) GAP between 05/19/08|09:20:37( 5214) and 05/19/08|14:52:51( 4365)