HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT        #4808 PERIOD COVERED: 5am March 10 - 5am March 11, 2009 (DOY 069/1000z-070/1000z) 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, howe ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4807 PERIOD COVERED: 5am March 9 - 5am March 10, 2009 (DOY 068/1000z-069/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11982 Spanning the Reionization History of IGM Helium: a Large and Efficient HST Spectral Survey of Far-UV-Bright Quasars The reionization of IGM helium is thought to have occurred at redshifts of z=3 to 4. Detailed studies of HeII Lyman-alpha absorption toward a handful of QSOs at 2.7<z& ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4806 PERIOD COVERED: 5am March 6 - 5am March 9, 2009 (DOY 065/1000z-068/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11984 Observing Saturn's High Latitude Polar Auroras Planetary auroral emissions are critical indicators of how the magnetospheres of the planets work. Recently, a new component of Saturn's auroral emissions, i.e. high latitude auroras inside the main auroral oval, have been observed by the C ...Continue Reading

Cooper, Joe would like to recall the message, "DR #4806 for review". ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4806 PERIOD COVERED: 5am March 6 - 5am March 9, 2009 (DOY                          065/1000z-068/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11984 Observing Saturn's High Latitude Polar Auroras Planetary auroral emissions are critical indicators of how the magnetospheres of the planets work. Recently ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4804 PERIOD COVERED: 5am March 4 - 5am March 5, 2009 (DOY 063/1000z-064/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11982 Spanning the Reionization History of IGM Helium: a Large and Efficient HST Spectral Survey of Far-UV-Bright Quasars The reionization of IGM helium is thought to have occurred at redshifts of z=3 to 4. Detailed studies of HeII Lyman-alpha absorption toward a handful of QSOs at 2.7<z&l ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4803 PERIOD COVERED: 5am March 3 - 5am March 4, 2009 (DOY 062/1000z-063/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11980 Deep FUV Imaging of Cooling Flow Clusters We propose to take deep ACS FUV images of a carefully selected sample of 19 bright central galaxies in nearby galaxy clusters. This program is the last critical element of a comprehensive investigation of the impact of stellar and AGN feedback o ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4802 PERIOD COVERED: 5am March 2 - 5am March 3, 2009 (DOY         061/1000z-062/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11980 Deep FUV Imaging of Cooling Flow Clusters We propose to take deep ACS FUV images of a carefully selected sample of 19 bright central galaxies in nearby galaxy clusters. This program is the last critical element of a comprehensive investigation of the ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4801 PERIOD COVERED: 5am February 27 - 5am March 2, 2009 (DOY        058/1000z-061/1000z) OBSERVATIONS SCHEDULED WFPC2 11986 Completing HST's Local Volume Legacy Nearby galaxies offer one of the few laboratories within which stellar populations can be tied to multi-wavelength observations. They are thus essential for calibrating and interpreting key astrophysical observa ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4800 PERIOD COVERED: 5am February 26 - 5am February 27, 2009 (DOY 057/1000z-058/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11982 Spanning the Reionization History of IGM Helium: a Large and Efficient HST Spectral Survey of Far-UV-Bright Quasars The reionization of IGM helium is thought to have occurred at redshifts of z=3 to 4. Detailed studies of HeII Lyman-alpha absorption toward a handful of QSOs at 2. ...Continue Reading