UVCS MISSION LOG ---------------- Date: 16 June 2009 ----- Last revision: 24 June 2009 (Wu) -------------- File Name: 2009.06.19.a.log ---------- Compiled by: M. Uzzo, R. Wu ------------ UVCS Activity: Flush and Abort North Coronal Hole Study for -------------- 18 - 19 June 2009 Flush OVI Detector Dark Rate Diagnostic for 19 June 2009 Place UVCS in Modified Hard Safe Configuration UVCS in Modified Hard Safe Configuration SOHO Activity: -------------- EOF Staff: M. P. Miralles: Lead Scientist ---------- M. Uzzo: Commander, Planner R. Wu Command file: 09.06.19.13:51:29.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 two large DSN gaps. 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 17:53 and 17:55 UT, respectively. TSU Substitution Heater (Circuit #84) turned on at approximately 18:00 UT. FOT using ESR Limit Set, Substitution Heater (Circuit #84) set to 50% duty cycle. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2009.06.19.17:53 end: 2009.06.19.18:30 ONUMs = 25566 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: Star_4x2_LYA in slot 4 - OVI mask: OVI_Hole_237 in slot 2 Fits Files: 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 two large DSN gaps. 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: 2009.06.19.18:30 end: 2009.06.20.16:00 ONUMs = 25566 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: Star_4x2_LYA in slot 4 - OVI mask: OVI_Hole_237 in slot 2 Fits Files: GAP between 06/19/09|19:57:14(14970) and 06/20/09|02:43:40( 4864) GAP between 06/20/09|02:43:40( 4864) and 06/20/09|03:00:18( 6459)