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Friday 25 October 2024 9.00am EDT
During the last week, the observing schedule was interrupted due to a radiation monitor threshold violation associated with unanticipated high off-axis source count rates from the very bright and extended observation target. The loads were autonomously halted at 10:10 a.m. EDT on Oct 21 by the ACIS radiation monitor through execution of SCS 107 for SI safing. All spacecraft actions were nominal. A real-time procedure was executed on Oct 21 to disable SCS-29, which was enabled during the safing sequence. Planned observations that were impacted by the interruption will be rescheduled. The schedule of targets for the next week is shown below, and includes an observation of AT2024qfm, which is a follow-up to a Target of Opportunity which was accepted on Aug 1 and is coordinated with NuSTAR, and an observation of SDSS J122855.90+341436.9 which is coordinated with HET. |
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Radiation Belts Oct 27
NGC6537 HRC-I
AT2024qfm ACIS-S Oct 28
Radiation Belts
Mrk34 ACIS-S
M33X-8 ACIS-S/HETG Oct 29
Vega HRC-S
Vega HRC-S
Mrk34 ACIS-S
M33X-8 ACIS-S/HETG
Mrk34 ACIS-S Oct 30
M33X-8 ACIS-S/HETG
NGC6537 HRC-I
1eRASSJ013811.8-253 ACIS-S
Abell370 ACIS-I
Radiation Belts Oct 31
LMC2273 ACIS-S
Abell370 ACIS-I Nov 1
NGC2287 HRC-I
Abell370 ACIS-I
SDSSJ090920.44+0044 ACIS-S
Abell370 ACIS-I
SDSSJ085711.68+0124 ACIS-S Nov 2
Mrk34 ACIS-S
Radiation Belts Nov 3
SDSSJ122855.90+3414 ACIS-S
HD61005 HRC-I
Abell370 ACIS-I
eRASSUJ080717.2-182 ACIS-S
Abell370 ACIS-I------------------------------------------
All spacecraft subsystems continued to support nominal operations.
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Revised: July 08, 2022