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Monday 29 May 2000 10.00am EDT
| During the last week, Chandra completed the observing schedule as planned with the exception of a 2 Ks HETG observation of the TOO XTE J1550-564 on 5/22 which was was made without the HETG inserted. The reason was traced to a ground system file update process which has been addressed.
The fourth ACIS squeegee mode test was conducted as planned at 5.30pm EDT on 5/22. The test was aimed at removal of a bias instability seen in the previous squeegee mode tests, and initial assessment of the results indicate that the on-orbit data are consistent with laboratory results in removing the instability - i.e., a successful test. Planning is underway for the next series of tests aimed at optimizing the squeegee mode parameters, with certain tests being performed from the daily load. The planned observations for the coming week are as follows. |
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PG 1254+047 ACIS-S May 28 MRK 421 ACIS-S/HETG May 29 MRK 421 ACIS-S/LETG PSR J0437-4715 ACIS-S TOO J1550-564 (decay) ACIS-S/HETG May 30 Radiation Belts 1736-297 ACIS-S PKS 2155-304 ACIS-S/LETG PKS 2155-304 HRC-S/LETG May 31 PKS 2155-304 ACIS-S/HETG M31 Transient ACIS-S NGC 7027 ACIS-S 3C 351 ACIS-S Jun 1 AX J1510+0742 ACIS-I Q1422+231 ACIS-S TOO J1550-564 (decay) ACIS-S/HETG Radiation Belts NGC 5506 ACIS-S Jun 2 PG 1115+080 ACIS-S AXAF Southern Deep Fld ACIS-I Jun 2/3 Radiation Belts Jun 4
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All spacecraft subsystems continued to operate nominally.
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Revised: July 08, 2022