UVCS MISSION LOG ---------------- Date: 07 February 2008 ----- Last revision: 12 February 2008 (Wu) -------------- File Name: 2008.02.11.a.log ---------- Compiled by: M. Uzzo ------------ UVCS Activity: Place UVCS in Modified Hard Safe Configuration -------------- UVCS in Modified Hard Safe Configuration SOHO Activity: -------------- EOF Staff: M. Uzzo / R. Wu: Lead Scientist ---------- M. Uzzo: Commander, Planner Command file: 08.02.11.13:58:00.cmd.log Activity: --------- 1) Place UVCS in Modified Hard Safe Configuration Sequence: Manual 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 February 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). UVCS removed from ESR Warning and Experiment Offpoint list at approximately 19:27 and 19:33 UT, respectively. TSU Substitution Heater (Circuit #84) turned on at approximately 19:43 UT. FOT using ESR Limit Set, Substitution Heater (Circuit #84) set to 50% duty cycle. Delays experienced due to RFI at DSS-24. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2008.02.11.19:01 end: 2008.02.11.19:21 ONUMs = 24074 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 OFF - VLD DETECTOR POWERED OFF - LYA mask: LYA_chk_1xfull in slot 6 - OVI mask: OVI_Str_Prof in slot 5 Fits Files: GAP between 02/11/08|17:19:11( 9872) and 02/11/08|17:21:15(10074) GAP between 02/11/08|17:55:14(13338) and 02/11/08|17:58:40(13666) GAP between 02/11/08|17:59:12(13717) and 02/11/08|18:03:09(14097) GAP between 02/11/08|18:03:15(14113) and 02/11/08|18:43:56( 1636) 2) 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 February 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: 2008.02.11.19:21 end: 2008.02.12.17:00 ONUMs = 24074 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 OFF - VLD DETECTOR POWERED OFF - LYA mask: LYA_chk_1xfull in slot 6 - OVI mask: OVI_Str_Prof in slot 5 Fits Files: GAP between 02/11/08|20:35:40(12375) and 02/11/08|21:16:53(16335) GAP between 02/12/08|01:05:43( 5551) and 02/12/08|04:08:32( 6727) GAP between 02/12/08|05:20:59(13687) and 02/12/08|05:30:54(14640) GAP between 02/12/08|05:59:23( 991) and 02/12/08|06:00:27( 1096) GAP between 02/12/08|08:35:36(16006) and 02/12/08|16:32:40(12684)