To:sot_shift from: Dan Schwartz date: 16 May 05, 12:00noon EST Subject: SOT shift report 2005-05-16 L2125 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/web-cxc/htdocs/acis/SOT_reports/May_16_2005_L2125.txt. Shift L2125. Start at 136:13:00 GMT = 08:00am 16 May EST End 10:00am 16 May SOT Lead DAS (Times will be given in GMT on day 136.) PLAN ---- Continue running load MAY1505A. Do obsid 5422, an ACIS-S/HETG observation to study the flaring and quiescent corona of the RS CVn star Sigma Gem, coordinated with Hubble STIS, and radio (VLA,VLBA,MERLIN,Arecibo) observations. Next Comms: 136 1215 1315 1415 136 2100 2200 2300 137 0245 0345 0445 137 1000 1025 1225 137 1800 1900 2000 137 2245 2345 0045 Orbital events: 2005:136:03:04:37.444 797 EPERIGEE ORBIT PERIGEE 2005:137:10:48:28.668 798 EAPOGEE ORBIT APOGEE 2005:138:18:32:11.566 798 EPERIGEE ORBIT PERIGEE 2005:140:02:15:58.092 799 EAPOGEE ORBIT APOGEE 2005:141:09:59:43.942 799 EPERIGEE ORBIT PERIGEE 2005:142:17:42:58.816 800 EAPOGEE ORBIT APOGEE 2005:144:01:27:04.955 800 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at AOS, 136:13:19, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 115.810 deg Dec = 28.897 deg ROLL = 264.909 deg Format = 2 OBSID = 5422 Sigma Gem SIM FA = -467 SIM TSC = 74423 (ACIS-S) DITHER = ENAB HETG = IN ( 5.96 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = LARG E150 = 99.5 E300 = 2.0 E1300 = 0.1 LT 10.0 (RADMON P4GM = 12.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.3280 mu-a Ascending through 81355 km. ACIS focal plane temperature -119.5 degC. EPH temp 68.89 degF 14:13 LOS. Status is essentially unchanged. Ascending through 85231 km. ACIS focal plane temperature -118.6 degC. EPH temp 70.51 degF NOTES/ISSUES/PROBLEMS On Saturday SCS 107 ran autonomously at 134:13:24:19. We lost the last quarter of obsid 5475, an ACIS-S/HETG observation of GX339-4, and obsid 5839, an HRC-S LETG ToO observation of 3C454.3 in a high state in order to detect absorption lines in the local intergalactic medium. 98.2ks net of previously scheduled on-target time was lost. The replan load MAY1505A was built and uplinked during the 135:1930 comm. This load picks up the previously scheduled MAY1305 sequence of observations. There remains the possibility to redo the 3C454.3 ToO on Thursday, if it remains bright. ACIS is warming up during the current observation. From the 9am status meeting: Eleven supports over the weekend. Bad predicts for one of the DSS-54 passes; new predicts were loaded and support requirements were met. Seven command loads were uplinked: three for MAY1305B, since terminated by the autonomous SCS 107, and four for MAY1505A, which are now running and good until 140:02:50. Work for MAY2305 will be started today, out in the next couple of days. Still uncertain is the possible re-do of the 3C454.3 ToO later this week. CAP648BE, the routine monthly ephemeris load, and CAP 675 to re-enable SCS 107 were both run successfully. The ACE soft proton rates are remaining at several thousand. HETG is in so there is no significant dosage currently building up on ACIS. Possibility of a "glancing blow from the 14 May CME along with a recurrent coronal hole high speed stream" over the next day. The SG1 command 1 server hung processes -- FST/GOT were able to get it on-line ten minutes into a support. Exchange server has been down since Saturday -- status of correction not known. Conference room glass doors still being installed. SE corner demolition will proceed this week. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 5612 SDSS J1626+2751 133:00:16 ACIS-S NONE Target not obvious 5746 M87 133:02:08 ACIS-S NONE Looks good 5443 RXJ0513.9-6951 133:20:03 HRC-S LETG Looks good 5475 GX 339-4 134:02:47 ACIS-S HETG Looks good -- interrupted by SCS 107 ------------------------------------------------------- Dan Schwartz, MS #3 das@head-cfa.harvard.edu phone: (617)495-7232 FAX: (617)495-7356 cell phone: (617)512-5627 pager: 877-693-7198 PIN 693-7198 or e-mail 6937198@archwireless.net -------------------------------------------------------