UVCS MISSION LOG ---------------- Date: 31 May 2006 ----- Last revision: 07 June 2006 (Wu) -------------- File Name: 2006.06.03.a.log ---------- Compiled by: R. Wu ------------ UVCS Activity: UVCS in Modified Hard Safe Configuration -------------- SOHO Activity: -------------- EOF Staff: R. Wu: Lead Scientist --------- M. Uzzo: Commander, Planner Y.-K. Ko Command file: No Commanding Activity: --------- 1) 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 June 2006. OVI and LyA Slits are set to 100 microns, instrument is rolled to nominal North East (30475 Engineering Units) to protect OVI detector electronics. 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 use ESR Limit Set, and turn on TSU Substitution Heater (Circuit #84) ON Experiment Offpoint and ESR Flags disabled for Keyhole. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2006.06.03.17:00 end: 2006.06.04.17:00 ONUMs = 22499 Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 0 Degrees - Roll: 90 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_4x4 in slot 5 Fits Files: GAP between 06/03/06|10:14:43(10847) and 06/03/06|22:23:30(15322) GAP between 06/04/06|00:34:47(11559) and 06/04/06|05:37:14( 7845) GAP between 06/04/06|13:00:25( 1274) and 06/04/06|13:01:53( 1410) GAP between 06/04/06|13:08:12( 2021) and 06/04/06|13:13:25( 2523)