UVCS MISSION LOG ---------------- Date: 06 November 2008 ----- Last revision: 25 November 2008 (Wu) -------------- File Name: 2008.11.20.a.log ---------- Compiled by: M. Uzzo, R. Wu ------------ UVCS Activity: Recover UVCS from Modified Hard Safe Configuration -------------- Conduct OVI Stimulus Pulse Test Thermal Equilibration of UVCS in Soft Safe Configuration SOHO Activity: 18 November 2008 SK/MM/Roll TIMELINE -------------- Last Update: 14 Novebmer 2008 16 UT EBZ Standard Disclaimer: All times are in UT and are estimates. Total Fuel Usage: 0.0514 kg OCD (offpoint flag, SVM times, ESR flags) due 13 Nov SORR on 14 Nov at 9am Limit violation sheets for safing due Monday morning 17 November THURSDAY -- 20 NOV 2008 ----------------------- D54 08:45 - 11:20 D45 20:55 - 00:55 D54 LASCO/EIT NRT if not finished yesterday on D45 UVCS recovery on D45 ~21:30 UT NRT available ~22:30 UT EOF Staff: M. Uzzo: Lead Scientist ---------- M. Uzzo: Commander, Planner R. Wu Command file: 08.11.20.20:51:35.cmd.log Activity: --------- 1) Recover UVCS from Modified Hard Safe Configuration Sequence: Manual SCI_SPEC: UVCS is recovered from Hard Safe Configuration into a Soft Safe configuration in order to allow UVCS temperatures to return to nominal. Detector High Voltage remains ramped down and turned off instrument is rolled to nominal East (35156 Engineering Units). The Mirror stays at 1.5 Solar Radii with 1.5 mm overocculting. UVCS Aperture Door is opened at this time, Internal Mirror / Occulter Heater set to 0% duty cycle (255). OVI Detecor Timing and Charge Thresholds set. FOT told to continue to use UVCS ESR Limit Set. FOT component of UVCS recovery, including enabling of the ESR Warning at 21:23 UT and Experiment Offpoint Flags (at, 21:27 UT, and the TSU Substitution Heater (Circuit #84) OFF completed at 21:29 UT UVCS NRT portion of recovery begins at approximately 21:31 UT Note: Recovery times (below) are approximate. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2008.11.20.21:23 end: 2008.11.20.21:45 ONUMs = 24909 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 ON - VLD DETECTOR POWERED OFF - LYA mask: LYA_wing_100 in slot 5 - OVI mask: OVI_sp2_164 in slot 4 Fits Files: 2) OVI Stimulus Pulse Test Sequence: TakeUV_TxN.tcl SCI_SPEC: OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2008.11.20.21:45 end: 2008.11.20.21:49 ONUMs = 24910 (2 exps) 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 MCP Voltage: 0 - OVI MCP Voltage: 0 - OVI mask: OVI_303_8x2 in slot 3 Fits Files: q08.11.20.21:44:19.ovi.dat 3) Thermal Equilibration of UVCS in Soft Safe Configuration Sequence: none SCI_SPEC: UVCS is recovered from Hard Safe Configuration into a Soft Safe configuration in order to allow UVCS temperatures to return to nominal. Detector High Voltage remains ramped down and turned off. Instrument is rolled to the nominal East (35156 Engineering Units), and Mirror / Occulter is set at 1.5 Solar Radii with 1.5 mm overocculting. UVCS Aperture Door is open. Internal Mirror / Occulter Heater set to 0% duty cycle. FOT told to continue to use UVCS ESR Limit Table. Expected Limit Violation sheets submitted to FOT via SOC for any expected limit violations during this time. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2008.11.20.21:49 end: 2008.11.21.13:14 ONUMs = 24910 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 - OVI DETECTOR POWERED ON - VLD DETECTOR POWERED OFF - LYA DETECTOR POWERED OFF - OVI mask: OVI_303_8x2 in slot 3 Fits Files: