HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4725 PERIOD COVERED: 5am October 27 - 5am October 28, 2008 (DOY         301/0900z-302/0900z) OBSERVATIONS SCHEDULED WFPC2 11103 A Snapshot Survey of The Most Massive Clusters of Galaxies We propose the continuation of our highly successful SNAPshot survey of a sample of 125 very X-ray luminous clusters in the redshift range 0.3-0.7. As demonstrated by the 25 snapshots obtai ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4724 PERIOD COVERED: 5am October 24 - 5am October 27, 2008 (DOY        298/0900z-301/0900z) OBSERVATIONS SCHEDULED FGS 11901/11212 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the a ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4723 PERIOD COVERED: 5am October 23 - 5am October 24, 2008 (DOY 297/0900z-298/0900z) OBSERVATIONS SCHEDULED FGS 11901 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the angular separations too close for easy ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4722 PERIOD COVERED: 5am October 22 - 5am October 23, 2008 (DOY         296/0900z-297/0900z) OBSERVATIONS SCHEDULED FGS 11901 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4720 PERIOD COVERED: 5am October 20 - 5am October 21, 2008 (DOY 294/0900z-295/0900z) OBSERVATIONS SCHEDULED FGS 11789 An Astrometric Calibration of Population II Distance Indicators In 2002 HST produced a highly precise parallax for RR Lyrae. That measurement resulted in an absolute magnitude, M(V)= 0.61+/-0.11, a useful result, judged by the over ten refereed citations each year since. It is, however ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4719 PERIOD COVERED: 5am October 17 - 5am October 20, 2008 (DOY 291/0900z-294/0900z) OBSERVATIONS SCHEDULED FGS 11901 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the angular separations too close for ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT    #4718 PERIOD COVERED: 5am October 16 - 5am October 17, 2008 (DOY 290/0900z-291/0900z) OBSERVATIONS SCHEDULED FGS 11212 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the angular separations too close for easy detection. H ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT    #4717   PERIOD COVERED: 5am October 15 - 5am October 16, 2008 (DOY 289/0900z-290/0900z)   OBSERVATIONS SCHEDULED   FGS 11212 Filling the Period Gap for Massive Binaries   The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the an ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4716 PERIOD COVERED: 5am October 14 - 5am October 15, 2008 (DOY 288/0900z-289/0900z) OBSERVATIONS SCHEDULED FGS 11212 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the angular separations too close for ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4715 PERIOD COVERED: 5am October 10 - 5am October 14, 2008 (DOY 284/0900z-288/0900z) OBSERVATIONS SCHEDULED FGS 11212 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the angular separations too close for ...Continue Reading