Friday 17 April 2015 9.00am EDT
During the last week Chandra completed the observing schedule as planned. A real-time procedure was executed on Apr 14 to perform a diagnostic dump of the Control Processing Electronics (CPE). A second real-time procedure was executed on Apr 15 to re-initialize the flight software Thruster Command Processing subfunction in order to prevent the occurrence of an overflow condition. A Chandra image release was issued on Apr 16 describing observations of the globular cluster NGC 6388. A planet may have been ripped apart by a white dwarf star in this globular cluster in the outskirts of the Milky Way. A white dwarf is the dense core of a star like the Sun that has run out of nuclear fuel. Combining data from Chandra and several other telescopes, researchers think a "tidal disruption" may explain what is observed. For details see: http://chandra.si.edu/photo/2015/ngc6388/ The schedule of targets for the next two weeks is shown below and includes an observation of SN2014C, accepted as a Director's Discretionary Time TOO follow-up on Dec 15, and an observation of the Cas A CCO, accepted as a Director's Discretionary Time TOO on Mar 9. |
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Radiation Belts Apr 19 CygnusA-EHotspot ACIS-I GRB130702A ACIS-S Apr 20 SN2014C ACIS-S G256.45-65.71 ACIS-I Apr 21 PSRB1259-63 ACIS-I Radiation Belts Apr 22 CygnusA-EHotspot ACIS-I Tycho ACIS-I Radiation Belts Apr 24 RXCJ1135.6-2019 ACIS-I Apr 25 SgrAcomplex1 ACIS-I RXCJ144248.5+120042 ACIS-I Apr 26 Abell1795outskirts ACIS-I Radiation Belts Apr 27 CasACCO ACIS-S A1795-B (2 obs) ACIS-I Apr 28 Radiation Belts Apr 29 CassiopeiaA ACIS-S Apr 30 CasACCO ACIS-S May 1 Abell1795outskirts ACIS-I NGC4487 ACIS-S May 2 MCG+01-32-049 ACIS-S Radiation Belts CygnusA-EHotspot ACIS-I May 3 Abell1795outskirts ACIS-I
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All spacecraft subsystems continued to support nominal operations.
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