UVCS MISSION LOG ---------------- Date: 21 January 2010 ----- Last revision: 3 March 2010 (RR) -------------- File Name: 2010.01.21.a.log ---------- Compiled by: R. Rosati ------------ UVCS Activity: North Coronal Hole 23 hr observation -------------- for 19 - 21 January 2010 Place UVCS is soft safe configuration for keyhole SOHO Activity: -------------- EOF Staff: J. Kohl: Lead Scientist ---------- L. Gardner: Planner R. Rosati: Commander Command file: 10.01.19.22:27:45.cmd.log 10.01.21.21:36:34.cmd.log 10.01.21.22:27:55.cmd.log 10.01.21.22:43:48.cmd.log Activity: --------- 1) North Coronal hole observation (continued) Sequence: 09.07_hole.tcl, n = 8, m = 1, p = 0, r = 1, e = 0 SCI_SPEC: Characterization of a polar coronal hole. Goal is to measure the properties of a polar coronal hole. In particular we are interested in the coronal conditions (intensities and line widths for HI Ly-alpha and OVI 1032/1037) as a function of height and latitude. We will compare these properties with the ones found in non-polar coronal holes. Roll positions are VL-corrected for PA=0 degrees. OBS_PROG: Primary: Sensitivity Sub Obj: Spatial Coverage SCI_OBJ: Plasma Properties...Proton and Ion Temperatures OBJ: Coronal Hole CMP_NAME: CMP_NUM: Duration: start: 2010.01.19.22:41 end: 2010.01.20.21:42 ONUMs = 26148 (191 exps) 26149 (143 exps) Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 180 Degrees - Roll: 0 Degrees (51551) - Mirror/Occulter: 2.4 Ro 1.5 mm overocculting - LYA Slit: 100 um - OVI Slit: 50 um - LYA GRTPOS: 100000 - OVI GRTPOS: 232100 - OVI MCP Voltage: 205 - OVI mask: OVI_Hole_237 in slot 2 Fits Files: q10.01.20.03:14:15.ovi.dat q10.01.20.14:15:35.ovi.dat 2) North Coronal hole observation (continued) Sequence: 09.07_hole.tcl, n = 8, m = 1, p = 0, r = 1, e = 0 SCI_SPEC: Characterization of a polar coronal hole. Goal is to measure the properties of a polar coronal hole. In particular we are interested in the coronal conditions (intensities and line widths for HI Ly-alpha and OVI 1032/1037) as a function of height and latitude. We will compare these properties with the ones found in non-polar coronal holes. Roll positions are VL-corrected for PA=0 degrees. OBS_PROG: Primary: Sensitivity Sub Obj: Spatial Coverage SCI_OBJ: Plasma Properties...Proton and Ion Temperatures OBJ: Coronal Hole CMP_NAME: CMP_NUM: Duration: start: 2010.01.20.21:42 end: 2010.01.21.20:43 ONUMs = 26150 (35 exps) 26151 (88 exps) Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 180 Degrees - Roll: 0 Degrees (51551) - Mirror/Occulter: 2.4 Ro 1.5 mm overocculting - LYA Slit: 100 um - OVI Slit: 50 um - LYA GRTPOS: 100000 - OVI GRTPOS: 232100 - OVI MCP Voltage: 205 - OVI mask: OVI_Hole_237 in slot 2 Fits Files: q10.01.21.02:16:28.ovi.dat q10.01.21.13:17:48.ovi.dat 3) OVI Detector Dark Rate Diagnostic (continued) Sequence: OVI_dark_chk.tcl SCI_SPEC: Determine Dark count rate for OVI detector. Instrument rolled to coronal hole, 5.0 Ro with 0.8 mm exposed mirror. Script engages OVI filter and then disengages it at end. OBS_PROG: Calibration SCI_OBJ: Calibration OBJ: Coronal Hole CMP_NAME: CMP_NUM: Duration: start: 2010.01.21.20:43 end: 2010.01.21.21:44 ONUMs = 26152 (12 exps) Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 180 Degrees - Roll: 0 Degrees (51551) - Mirror/Occulter: 5.0 Ro 0.79 mm exposed mirror - LYA Slit: 100 um - OVI Slit: 50 um - LYA GRTPOS: 100000 - OVI GRTPOS: 210000 - OVI MCP Voltage: 205 - OVI mask: OVI_chk_1xfull in slot 6 Fits Files: 4) Place UVCS in Soft Safe Configuration Sequence: Manual SCI_SPEC: Following completion of Science Observations, UVCS is placed into a soft safe configuration in preparation for the SOHO High Gain Antenna Keyhole Period of January/ February 2010. OVI slit is set to 50 microns and LyA to 100 microns, instrument roll is left at nominal North (51551 Engineering Units). Instrument roll will be nominal South following keyhole. OVI Detector High Voltage is ramped down and then turned off. LyA Detector was already off. OBS_PROG: SCI_OBJ: OBJ: CMP_NAME: CMP_NUM: Duration: start: 2010.01.21.21:39 end: 2010.01.21:22:49 ONUMs = Instrument configuration: - Pointing: Sun center - Spacecraft Roll: 0 Degrees - Roll: 0 Degrees (51551) - Mirror/Occulter: 2.5 Ro 1.5 mm overocculting - LYA Slit: 100 um - OVI Slit: 50 um - LYA GRTPOS: 100000 - OVI GRTPOS: 232100 - OVI HIGH VOLTAGE RAMPED DOWN AND POWERED OFF - LYA DETECTOR POWERED OFF - OVI DETECTOR POWERED OFF - VLD DETECTOR POWERED OFF - LYA mask: - OVI mask: Fits Files: