UVCS MISSION LOG ---------------- Date: 10 December 2004 ----- Last revision: 13 December 2004 (Ko) -------------- File Name: 2004.12.10.a.log ---------- Compiled by: M. Uzzo, R. Wu ------------ UVCS Activity: First half of UVCS recovery from Safe Mode due to -------------- SOHO ESR to Soft Safe Configuration UVCS Stimulus Pulse Test UVCS Thermal Equilibration in Soft Safe Configuration SOHO Activity: -------------- EOF Staff: G. Poletto: Lead Scientist ---------- M. Uzzo: Commander, Planner R. Wu Command file: 04.12.09.14:07:00.cmd.log Activity: --------- 1) UVCS Recovery from ESR Safe to Soft Safe Configuration Sequence: Manual SCI_SPEC: UVCS is recovered from ESR 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, OVI Slitwidth is 100 microns, 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 opened at this time. Internal Mirror / Occulter Heater Heater set to 0% duty cycle. XDL Detector Thresholds set. FOT told to continue to use UVCS ESR Limit Table. Experiment Offpoint and ESR Flags enabled. Expected Limit Violation sheet submitted to FOT via SOC for any expected limit violations during this time. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2004.12.10.16:00 end: 2004.12.10.16:30 ONUMs = 46960 Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 0 Degrees - Roll: 90 Degrees (35156) - Mirror/Occulter: 1.5 Ro 1.5 mm overocculting - LYA Slit: 50 um - OVI Slit: 100 um - LYA GRTPOS: 128000 - OVI GRTPOS: 229000 - OVI HIGH VOLTAGE POWERED OFF - OVI DETECTOR POWERED OFF - OVI mask: OVI_Syn_230 in slot 1 Fits Files: 2) OVI Synoptic Exposure Transmission Sequence: Manual SCI_SPEC: This is the final exposure left in the buffer after the ESR which was transmitted after initial UVCS recovery into soft safe configuration. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2004.12.08.21:57 end: 2004.12.08.21:59 ONUMs = 46960 (1 exp) Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 0 Degrees - Roll: SW: os - Mirror/Occulter: ls: 3.00, 2.50, 2.10, 1.90, 1.75, 1.60 Ro lc: 2.10, 1.90, 1.75, 1.60 Ro os: 3.00, 2.10, 1.90, 1.75, 1.60 Ro oc: 1.90, 1.75, 1.60 Ro ms: 2.10, 1.75, 1.60 Ro mc: 1.90, 1.75, 1.60 Ro 1.5 mm overocculting (1.60 Ro) 2.0 mm overocculting (1.75, 1.90, 2.10, 2.50, 3.00 Ro) - LYA Slits: 50 um - OVI Slits: 150 um (LyA Synoptic) 200 um (OVI, and Mini Synoptic) - LYA GRTPOS: 128000 - OVI GRTPOS: 177596 (LyA Synoptic) 229000 (OVI, and Mini Synoptic) - OVI MCP Voltage: 200 - OVI mask: OVI_Syn_178 in slot 2 (LyA Synoptic) OVI_Syn_230 in slot 1 (OVI, and Mini Synoptic) Fits Files: z04.12.08.21:27:18.ovi.dat 3) UVCS Stimulus Pulse Test Sequence: Manual SCI_SPEC: OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2004.12.10.16:26 end: 2004.12.10.16:31 ONUMs = 21885 (2 exps) Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 0 Degrees - Roll: 90 Degrees (35156) - Mirror/Occulter: 1.5 Ro 1.5 mm overocculting - LYA Slits: 50 um - OVI Slits: 100 um - LYA GRTPOS: 128000 - OVI GRTPOS: 229000 - OVI HIGH VOLTAGE POWERED OFF - OVI mask: msk_000303_OVI in slot 3 Fits Files: q04.12.10.16:22:54.ovi.dat 4) UVCS in Soft Safe Configuration Sequence: Manual SCI_SPEC: UVCS is recovered from ESR 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, OVI Slitwidth is 100 microns, 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 opened at this time. Internal Mirror / Occulter Heater Heater set to 0% duty cycle. XDL Detector Thresholds set. FOT told to continue to use UVCS ESR Limit Table. Experiment Offpoint and ESR Flags enabled. 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: 2004.12.10.16:31 end: 2004.12.11.12:00 ONUMs = 21885 Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 0 Degrees - Roll: 90 Degrees (35156) - Mirror/Occulter: 1.5 Ro 1.5 mm overocculting - LYA Slits: 50 um - OVI Slits: 100 um - LYA GRTPOS: 128000 - OVI GRTPOS: 188310 - OVI HIGH VOLTAGE POWERED OFF - OVI mask: msk_000303_OVI in slot 3 Fits Files: