UVCS MISSION LOG ---------------- Date: 15 September 1997 ----- Last revision: 07 May 1998 (Wu) -------------- File Name: 97.09.15.a.log ----------- Compiled by: S. Fineschi ------------ UVCS Activity: LyA XDL Tests -------------- Grating-Mirror x-talk calibration Outflow velocities in coronal holes SOHO Activity: -------------- EOF Staff: R. Esser: Lead Observer (acting for J. Kohl) ---------- S. Fineschi: Commander/Instrument Ops. Scientist A. Ciaravella R. O'Neal A. Modigliani R. Wu Command file: 97.09.15.16:45:36.cmd.log Activity: 1) LyA XDL Test Sequence: manual SCI_SPEC : A new SAFET.DAT table was loaded with max lya mcp current set ar 142. Test LyA HVPS Turn Down. Measurement of MCP current at HV=180, for various grating positions. OBS_PROG: Primary: Calibration Sub Obj: SCI_OBJ: Primary: Calibration Sub Obj: Flat Field OBJ: Streamer CMP_NO: CMP_NAME: Duration: start: 97.09.15.17:36 end: 97.09.15.22:06 ONUMs: 5117 (33 exposures) Instrument configuration: - Pointing: Sun-Centered - Roll: PA=90 deg - Mirror: 1.5 Ro - Occulter: 0.8 mm under-occulting - LYA Slits: 150 um - OVI Slits: - LYA GRTPOS: 129000, 130000, 131000; 116000, 117000, 118000; 70000, 71000, 72000, 73000 - OVI GRTPOS: - LYA mask: msk_000303 - OVI mask: - VLD Filter Engaged - LYA Filter Disengaged - OVI Filter Disengaged Fits files q97.09.15.17:18:52.lya.dat 2) Grating-Mirror mechanism x-talk calibration Sequence: manual SCI_SPEC : The Grating-Mirror mechanism x-talk has been calibrated using limb observations. The motion of the mirror due to the x-talk has been tracked by taking images, in the LYA channel, of the solar limb every time that the OVI grating was moved into different positions. Then, with OVI grating fixed, the telescope structure was off-set into different pointing position to obtain the intensity profile of the across the limb. OBS_PROG: Primary: Calibration Sub Obj: SCI_OBJ: Primary: Calibration Sub Obj: Pointing calibration OBJ: Streamer CMP_NO: CMP_NAME: Duration: start: 97.09.16.00:21 end: 97.09.16.01:10 ONUMs: 5118 (14 exposures) 5121 (12 exposures) Instrument configuration: - Pointing: -9.0, -9.1, 9.2, -9.3, -9.4, 9.5 arcmin (ONUM=5118) -9.0 -> -11.0 arcmin in steps of 0.2 (ONUM=5121) - Roll: PA=90 deg - Mirror: 1.5 Ro - Occulter: 1.5 mm occulting - LYA Slits: 50 um - OVI Slits: - LYA GRTPOS: 130000 - OVI GRTPOS: (50, 75, 100, 125, 150, 175, 200, 225, 240) X 1000 (ONUM=5118) 50000 (ONUM=5121) - LYA mask: LYA_Syn130 - OVI mask: - VLD Filter Engaged - LYA Filter Engaged - OVI Filter Disengaged Fits files q97.09.15.23:35:23.lya.dat q97.09.16.00:48:10.lya.dat 3) Outflow velocities in coronal holes Sequence: 97.09.15_kohl.tcl SCI_SPEC : Study of the intensity and profile variations of minor ions as a function of height in a coronal hole. OBS_PROG: Primary: Sensitivity Sub Obj: SCI_OBJ: Primary: Outflow Velocities Sub Obj: Ion Temperature OBJ: Coronal Hole (N) CMP_NO: 1970 CMP_NAME: Minor Ions in coronal hole Duration: start: 97.09.16.01:38 end: 97.09.16.17:58 ONUMs: 5119 (72 exposures) 5120 (24 exposures) Instrument configuration: - Pointing: Sun-Centered - Roll: PA=0 deg - Mirror: 1.5 Ro - Occulter: 1.5 mm occulting - LYA Slits: 50 um - OVI Slits: 75 um - LYA GRTPOS: 70000 - OVI GRTPOS: 76500, 160000, 237000 - LYA mask: LYA_70_ONeal - OVI mask: OVI_Red_HiRes, OVI_2375_HiRes - VLD Filter Disengaged - LYA Filter Disengaged - OVI Filter Disengaged Fits files q97.09.16.01:37:06.lya.dat q97.09.16.01:37:06.ovi.dat q97.09.16.01:37:06.vld.dat q97.09.16.13:52:52.lya.dat q97.09.16.13:52:52.ovi.dat q97.09.16.13:52:52.vld.dat