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Despite the partial loss of the Advance Camera for Surveys (ACS), the Hubble Space Telescope continues to provide excellent data and exciting scientific results.

The data from the 9 September 2006 visit of the HST Optical Monitoring Program have been analyzed. Results of phase retrieval on stellar targets in ACS/HRC and WFPC2/PC in parallel give good agreement with the mean of HRC measurements over the orbit.

The Hubble spacecraft is operating nominally. All science instruments of Hubble - with the exception of STIS - are delivering data for frontline science.

From the operational point of view, the Hubble spacecraft is working nominally. Since the switch to two-gyro mode in late August 2005, operations have continued without any problems. The two-gyro mode operating well, work shifted to evaluating the potential for a one-gyro mode. An initial study confirmed its feasibility and work began to define the operational concept and requirements. A successful preliminary design review was held in November and the various teams began moving forward on detailed design activities for implementing this contingency mode.

The Hubble spacecraft continues to operate nominally. To extend its expected scientific lifetime, and after the on-orbit two-gyro mode test using all science instruments was carried successfully, HST was transitioned to two-gyro mode on August 28. All indications are that the performance in two-gyro mode is excellent. This early introduction of the two-gyro science mode is expected to extend the observing lifetime of HST with the current set of gyros by at least 9 months to late-2008, corresponding to 2400 to 3000 more orbits of useful science.

From the operational point of view, the Hubble spacecraft is operating nominally, with the exception of the Space Telescope Imaging Spectrograph (STIS), one of the five on-board science instruments, which failed on August 3rd, 2004.

From an operational point of view, the Hubble spacecraft is performing nominally. Measurements over the last few months have shown a negative average position for the HST focus. Consequently, an HST secondary mirror move of 4.16 micron away from the primary was performed on 22 December 2004. Analysis of data taken shortly before and after the focus adjustment show a change in the point-spread function consistent with the return to nominal focus.

Overall, the Hubble Space Telescope (HST) is operating nominally with all instruments functioning very well.

Mission Status

The HST observatory is operating nominally with all instruments functioning. The Phase I deadline for the 13th Cycle of HST observations is on the 23 January 2004 with the peer review taking place in Baltimore at the end of March. Notification to the PIs of successful proposals is on 4 April.