Friday 5 April 2024 9.00am EDT
During the last week Chandra completed the observing schedule as planned. A real-time procedure was executed on Mar 29 to clear a glitch counter that incremented during eclipse exit on Mar 28. This is a routine event possible following an eclipse. Additional real-time procedures were executed on Apr 2 to disable SCS-29 and to dump and clear the EPS glitch counters as post-eclipse season actions. Further real-time procedures were executed on Apr 3 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer and to perform a diagnostic dump of the CPE. Chandra passed through the 29th and 30th (and final) eclipses of the season on Mar 31 and Apr 2 respectively, with nominal power and thermal performance. Of note this week was an announcement of the symposium "25 Years of Science with Chandra", to be held in Boston December 3-6, 2024. Also of note was the release on Apr 2 of the Chandra Source Catalog Release 2.1 (The 22-year Source Catalog), which covers roughly 730 square degrees of sky and contains 407,806 unique X-ray sources and 1,304,376 individual source detections identified in 15,533 Chandra ACIS and HRC-I imaging observations released publicly prior to the end of 2021. For details see: http://cxc.cfa.harvard.edu/csc/ The schedule of targets for the next week is shown below and includes an observation of SDSSJ095023.20+0246 coordinated with HET, observations of M87 coordinated with Event Horizon Telescope and NuSTAR, and observations of SgrA* coordinated with JWST, Event Horizon Telescope, and NuSTAR. |
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Radiation Belts Apr 7 SgrA* ACIS-S SDSSJ090646.98+1740 ACIS-S M87 ACIS-S M87 ACIS-S SDSSJ075136.36+4327 ACIS-S SDSSJ085149.58+42471 ACIS-S HD115247 HRC-S /LETG WISEAJ214505.18+634 ACIS-S Apr 9 SgrA* ACIS-S HE1338-1423 HRC-S /LETG LMCDeepField05 ACIS-I GW170817 ACIS-S LMCDeepField03 ACIS-I Apr 10 GW170817 ACIS-S Radiation Belts SDSSJ092002.85+0544 ACIS-S WHLJ112126.4+534457 ACIS-I Apr 11 HE1338-1423 HRC-S /LETG A2384 ACIS-I 2MASXJ13292099-2110 ACIS-I Apr 12 LMCDeepField03 ACIS-I HE1338-1423 HRC-S /LETG A2384 ACIS-I SDSSJ141215.60-0037 ACIS-S LEDA-36252 ACIS-S SDSSJ095023.20+0246 ACIS-S ACT-CLJ0947.9-0120 ACIS-S Radiation Belts Apr 13 SDSSJ091930.31+11085 ACIS-S SDSSJ130002.91-01060 ACIS-S SDSSJ074521.78+47343 ACIS-S SDSSJ125519.69+01441 ACIS-S Apr 14 SDSSJ074521.78+47343 ACIS-S LEDA-36252 ACIS-S PSOJ172.3556+18.773 ACIS-S SDSSJ092855.53+33224 ACIS-S
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All spacecraft subsystems continued to support nominal operations.
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