Friday 20 December 2024 9.00am EST
During the last week Chandra completed the observing schedule as planned. A real-time procedure was executed on Dec 13 to patch the F_Eclipse K-Constant. This maintenance patch corrects for the expected slow decrease over time in trickle charge current from the solar arrays. Without this adjustment, during eclipse season the eclipse flag could toggle even with the arrays in sunlight, causing the On-Board Computer to initiate eclipse entry procedures at the wrong time. Additional real-time procedures were executed on Dec 16-20 to dump OBC-A and -B memory as a follow-up to the flight software patch. The dump will be used to update the baseline memory images maintained on the ground. A Chandra image release was issued on Dec 17 describing a Cosmic 'Wreath' displaying the "Stellar Circle of Life." This is a new image of the NGC 602 a star cluster in the Small Magellanic Cloud. It combines data from Chandra and the James Webb Telescope. It resembles a holiday wreath and shows young stars illuminating dark clouds of dust. For details see: https://chandra.harvard.edu/photo/2024/ngc602/ Of note this week was the release on Dec 19 of the Cycle 27 Call
for Proposals. The proposal submission deadline is 19 March 2025.
In conjunction with the call was the release on Dec 17 of the CIAO
version 4.17 analysis software system, Chandra CalDB version 4.11.6,
SAOImage DS9 version 8.6, and MARX version 5.5.3. For details see: The schedule of targets for the next week is shown below and includes observations of PS15bva KISS15s coordinated with the VLA. |
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Radiation Belts Dec 23 ACT-CL_J0034.4+0225 ACIS-S ArLac (10 obs) HRC-I CasA ACIS-S NGC1300 ACIS-S CrabNebula ACIS-S PSZ2G045.50-37.21 ACIS-I Dec 24 PSRJ0357+3205 ACIS-I MaNGA10215-6102 ACIS-S HZ43 HRC-S /LETG SDSSJ074231.57+2738 ACIS-S SDSSJ153753.72+0850 ACIS-S SDSSJ074231.57+2738 ACIS-S Dec 25 SDSSJ153753.72+0850 ACIS-S MaNGA9486-12705 ACIS-S Radiation Belts Dec 26 PSZ2G048.09+27.18 ACIS-S HZ43 HRC-S /LETG SDSSJ075522.34+1505 ACIS-S VelaX-1 ACIS-S/HETG NGC1300 ACIS-S VelaX-1 ACIS-S/HETG NGC1977point ACIS-I Dec 27 PSOJ170.8326+20.208 ACIS-S 2MASXJ06591070+24014 ACIS-S HE1353-1917 HRC-I NGC4207 ACIS-S Radiation Belts Dec 28 PSRJ1958+2846 ACIS-I PerseusclusterE ACIS-I PS15bvaKISS15s ACIS-S Dec 29 NGC1300 ACIS-S GaiaDR234283577989 ACIS-S ACT-CLJ2151.9+1113 ACIS-S HEPG180.707+04.302 ACIS-I PSRJ1958+2846 ACIS-I Dec 30 Abell370 ACIS-I SN2002ap HRC-I VelaX-1 ACIS-S/HETG
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All spacecraft subsystems continued to support nominal operations.
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