UVCS MISSION LOG ---------------- Date: 21 October 2009 ----- Last revision: 10 November 2009 (MU) -------------- File Name: 2009.11.09.a.log ---------- Compiled by: M. Uzzo ------------ UVCS Activity: Recover UVCS from Modified Hard Safe Configuration -------------- Conduct OVI Stimulus Pulse Test Thermal Equilibration of UVCS in Soft Safe Configuration SOHO Activity: -------------- EOF Staff: J. Kohl: Lead Scientist ---------- M. Uzzo: Commander, Planner Command file: 09.11.09.12:40:45.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 12:56 UT and Experiment Offpoint Flags (at, 12:58 UT, and the TSU Substitution Heater (Circuit #84) OFF completed at approximately 13:00 UT UVCS NRT portion of recovery begins at approximately 12:50 UT. Note: Recovery times (below) are approximate. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2009.11.09.12:30 end: 2009.11.09.13:00 ONUMs = 25944 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: 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 ON - VLD DETECTOR POWERED OFF - LYA mask: LYA_chk_1xfull in slot 6 - OVI mask: OVI_chk_1xfull in slot 6 Fits Files: 2) OVI Stimulus Pulse Test Sequence: TakeOVIexps.tcl, 0, 0, 2 SCI_SPEC: OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2009.11.09.1 end: 2009.11.09.1 ONUMs = 25945 (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: 210000 - LYA MCP Voltage: 0 - OVI MCP Voltage: 0 - OVI mask: OVI_303_8x2 in slot 3 Fits Files: q09.11.09.12:42:55.ovi.dat.Z 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: 2009.11.09.13:00 end: 2009.11.10.18:30 ONUMs = 25945 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: 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 ON - VLD DETECTOR POWERED OFF - OVI mask: OVI_303_8x2 in slot 3 Fits Files: