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Operations CXO Status Report

Friday 16 April 2010 9.30am EDT

During the last week the observing schedule was replanned to include a series of 5 ks observations of M87 that was accepted as a Target of Opportunity on Apr 09. The replacement loads were uplinked on Apr 11. Planned observations of NGC1340, 2PIGG_m1441, RXJ033340.22-391833, and 6dF J0405204-364859 were impacted and will be rescheduled at a later date.

A real-time procedure was executed on Apr 14 to update the on-board ephemeris.

A Chandra press release was issued on Apr 14 describing how Chandra observations have been used to test Einstein's General Theory of Relativity. Via different methods, two separate teams have tested gravity and General Relativity using Chandra observations of galaxy clusters. The results from each show that Einstein's famous theory works even on some of the largest scales. Such studies are necessary to understand the evolution of the Universe and the nature of dark energy, one of the biggest mysteries in science. For details see: http://chandra.harvard.edu/press/10_releases/press_041410.html

The schedule of targets for the next week is shown below and includes observations of GRB100413A and Swift J1749.4-2807 that were accepted as Targets of Opportunity on Apr 15 as well as TOO observations of M87 and GRB100316d and a DDT/TOO of KT Eri.

------------------------------------------
GRB100413A             ACIS-S       Apr 19
SDSSJ130803.88+5052    ACIS-S
PGC042982              ACIS-S
ESO323-G077            ACIS-S/HETG
EXO0748-676            ACIS-S       Apr 20
2PIGG_m1441            ACIS-I
M87                    ACIS-S
Radiation Belts
SNR0049-73.6           ACIS-S       Apr 21
KTEri                  HRC-S/LETG
ESO323-G077            ACIS-S/HETG
SNR0049-73.6           ACIS-S       Apr 22
Radiation Belts                     Apr 23
GRB100316d             ACIS-S
ESO323-G077            ACIS-S/HETG  Apr 24
NGC4459                ACIS-S
PGC056821              ACIS-S       Apr 25
SwiftJ1749.4-2807      ACIS-S
Q2237+0305             ACIS-S

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

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