SSOC Tohban's Report for Week 24 (07-Jun-99 -- 13-Jun-99) SSOC: J. Khan, Y. Liu KSC: Y. Nakagawa, D. Sasaki 0. Meeting Attendance Ogawara, Sakao, Kato, Liu, Khan, Martens -------------------------------------------------------------- 1. Solar Activity Although there were about ten active regions on the disk, solar activity was relatively low. There were over twenty C-class, most in the range C1-C2. There was one M-class flare (M1.0). -------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded during week 24: ===================================================== JST Date Pass Table ID ===================================================== Mon 07-Jun-99 2 990606 P2 ARS1 UVCS * Tue 08-Jun-99 2 990607 P2 ARS1 UVCS * Wed 09-Jun-99 2 990608 P2 ARS1 DIUVCS * Wed 09-Jun-99 5 990608 P5 ARS1 DAUVCS * Thu 10-Jun-99 3 990609 P3 ARS1 DAUVCS * Fri 11-Jun-99 3 990610 P3 ARS1 STD * Sat 12-Jun-99 1 990611 P1 ARS1 STD * ===================================================== The "*" indicates that the UT date of the first pass of the day (which determines the Table ID) does not match the JST date of the actual upload. 2.2 STT Timer setting STT timer was set during pass 1 on 7-Jun-99. -------------------------------------------------------------- 3. Special Operations 3.1 Spacecraft pointing The following pointing commands were issued this week. These were done to co-ordinate with a joint observing campaign with SOHO UVCS to examine streamers. 990607 175955 OG 85 (Dec) (S/C E9.89 S2.77) Offpoint x 990607 235907 OG 85 (Dec) (S/C E9.89 S2.77) Offpoint o 990608 021600 ROG 20 pass 990608-0205 Normal Pointing 990608 024947 OG 85 (Dec) (S/C E9.89 S2.77) Offpoint (Terminator) 990608 025955 OG 32 (Dec) (S/C W.170 N.754) Normal Pointing (Term.) x 990608 145955 OG 32 (Dec) (S/C W.170 N.754) Normal Pointing o 990608 194037 ROG 55 pass 990608-1340 Offpoint 990608 235851 OG 32 (Dec) (S/C W.170 N.754) Normal Pointing 990609 030323 OG 85 (Dec) (S/C E9.89 S2.77) Offpoint (Term.) 990609 031955 OG 32 (Dec) (S/C W.170 N.754) Normal Pointing (Term.) 990609 143955 OG 85 (Dec) (S/C E9.89 S2.77) Offpoint 990609 225507 OG 32 (Dec) (S/C W.170 N.754) Normal Pointing 990610 031731 OG 85 (Dec) (S/C E9.89 S2.77) Offpoint (Term.) 990610 033715 OG 32 (Dec) (S/C W.170 N.754) Normal Pointing (Term.) 990610 145955 OG 85 (Dec) (S/C E9.89 S2.77) Offpoint 990610 193804 OG 32 (Dec) (S/C W.170 N.754) Normal Pointing 3.2 BCS Calibrations A BCS STIM CAL (Day) was carried out during pass 990611-0103, while a BCS Source Cal was carried out on 990610 near 1950 UT. -------------------------------------------------------------- 4. Errors and Problems 4.1 BCS Errors: None 4.2 SXT Errors: An SXT Table Upload was planned for pass 4 on Wed 09-Jun (990609-0102) but was not ready in time. This table was uploaded during pass 5, but the KSC Tohbans were unable to read and confirm the table on the ground. On pass 1 on Thu 10-Jun (990610-1237) the table read commands were issued successfully. -------------------------------------------------------------- 5. NASA Station Scheduling 5.1 Contact pass cancels/adds The following DSN/NASA passes were added/deleted: =================================================================== DSN/NASA Schedule Week Schedule Changes =================================================================== Real-time 24 1 passes deleted by DSN/Wallops Final 25 12 passes (11 Santiago) deleted by SSOC Final 25 4 passes Added by DSN/Wallops (--- from 9 requested by SSOC) Preliminary 26 1 pass (Santiago) deleted by SSOC Preliminary 26 7 passes requested for Addition by SSOC Strawman 27 70 passes (23 for ASCA) deleted by SSOC =================================================================== 5.2 Data Transmission from NASA Ground Stations -(From /home/flare1/yohkoh/dsn_corrupt/99_24)--------------- 151 80 1810 corrupted tape requested 08 Jun Closed/ Correct data 153 80 1151 corrupted tape requested 08 Jun 154 46 0801 not received requested 08 Jun Closed/ No data 157 80 1108 corrupted tape requested 08 Jun Closed/ Same data 157 46 0844 not received requested 08 Jun Closed/ Correct data 154 80 1347-1400: 11513 blocks Early loss due to antenna failure. 154 46 0801-0812: TGC 5 configuration problem. No data for DOY-154/0801-0812. 159 46 0729-0743: 10512 blocks DR A03782 - lost 3min. ----- Also Saturday morning we received an email from Sharon Siggers at Wallops: >The following Solar support was deleted due to testing at DSS-16: > >163 1021 1046 1057 1107 DSS-16 SOL 2145 > >I'm sorry for the inconvience. The weekend OP (starting DOY 162) had already been loaded and the next OP upload was not until early Monday morning JST (DOY 164). Consequently, we could not change the OP to reflect this last minute change and thus there will be some over-writing of the Yohkoh data. -------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In Week 24, 9 KSC contacts were lost to ASCA. In week 25, 12 KSC contacts will be lost: 7 to ASCA, 5 to Akebono. -------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 25 SSOC: T. Sakao, Y. Kato KSC: D. Sasaki, Y. Hanaoka 7.2 STT timer setting The next STT TIMER SET is due on pass 1 on 14-Jun-99 (990614-1032) We have already written the commands into the real-time command sheets. 7.4 Holiday Schedule The next holiday will be Sunday, 20-Jun-99 (JST). 7.4 Upcoming SERTS rocket flight on June 24 For the SERTS rocket flight on June 24, we need to get the following KSC passes if at all possible: 25-JUN-99 01:41:59 (24-JUN-99 16:41:59) 01:53:29 0.0 11.5 11.5 25-JUN-99 03:25:29 (24-JUN-99 18:25:29) 03:34:44 0.2 9.0 9.2 7.5 Terminator Images for weekend OP If there is empty slot in the weekend OP, please add OG for terminator image to the weekend OP. Normally we can not do this, because there is no empty slot in the weekend OP. 7.6 KSC pass conflicts (from earlier weeks) ASCA conflicts cause the loss of about 10 KSC contacts per week at this time. We do not know which contacts Yohkoh will lose until the weekly meeting. Santiago contacts occur on the same orbits as KSC contacts. Therefore, keep as many Santiago contacts as possible in the DSN Strawman and Preliminary Forecasts. 7.7 Mainframe Replacement Mainframes will be replaced from 11-Jul(Sun) to 15-Jul(Thu). Caution when SSOC Tohbans make OPs. === END ===