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Operations CXO Status Report

Friday 1 July 2011 9.00am EDT

During the last week Chandra completed the observing schedule as planned.

Real-time procedures were executed on Jun 29 in preparation for a 17-minute-long, penumbral Lunar eclipse on July 1: one to activate SCS 29 and one to set the short eclipse flag to 'true'. Chandra passed through the eclipse with nominal power and thermal performance. Real-time procedures were executed following the eclipse on Jul 1 to disable SCS29, to set the short eclipse flag to 'false', and to dump and clear the EPS glitch counters.

Of note this week was the release on Jun 30 of CALDB 4.4.5. This update includes ACIS time-dependent gain corrections for the period from Nov 2010 onward and HRC-S Time-displaced QE Uniformity files. for details see: http://cxc.harvard.edu/caldb/downloads/Release_notes/CALDB_v4.4.4.html and http://cxc.harvard.edu/caldb/downloads/Release_notes/CALDB_v4.4.5.html Also of note was the release on June 28 of CXCDS 8.4 for standard processing which includes ACIS sub-pixel resolution for events and an aspect correction for periscope alignment drift.

The schedule of targets for the next week is shown below and includes observations of GX 349+2 and XTE J1710-281 coordinated with RXTE.

------------------------------------------
Radiation Belts                     Jul  3
MKN421                 ACIS-S/HETG  Jul  4
MKN421                 ACIS-S/LETG
MKN421                 HRC-S/LETG
MKN421                 ACIS-S/LETG
MKN421                 HRC-S/LETG
MKN421                 ACIS-S/LETG
MKN421                 HRC-S/LETG
MKN421                 ACIS-S/HETG  Jul  5
NGC3587                ACIS-S
HD189733               ACIS-S
IGRJ16206-5253         ACIS-I
GX349+2                ACIS-S/HETG
       Shapleyfilament        ACIS-S       Jul  6
       Radiation Belts
       XTEJ1710-281           ACIS-S/HETG
IGRJ16173-5023         ACIS-I       Jul  7
HD189733               ACIS-S
SDSSJ160918.93+0824    ACIS-S
SAXJ1712.6-3739        ACIS-S       Jul  8
Radiation Belts                     Jul  9
GX349+2                ACIS-S/HETG
IGRJ15368-5102         ACIS-I
HD189733               ACIS-S
Oph1622-2405           ACIS-S       Jul 10
GX349+2                ACIS-S/HETG

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

All spacecraft subsystems continued to support nominal operations.

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