HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4199 PERIOD COVERED: UT September 14, 2006 (DOY 257) OBSERVATIONS SCHEDULED ACS/WFC 10881 The Ultimate Gravitational Lensing Survey of Cluster Mass and Substructure We propose a systematic and detailed investigation of the mass, substructure, and thermodynamics of one hundred X-ray luminous galaxy clusters at 0.151} cluster samples. For this ultimate cluster survey, we request ACS SNAPSHOTS through the F606W filter drawn from ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4198 PERIOD COVERED: UT September 13, 2006 (DOY 256) OBSERVATIONS SCHEDULED SIGNIFICANT EVENTS: (None) ACS/HRC/WFC 10758 ACS CCDs daily monitor This program consists of a set of basic tests to monitor, the read noise, the development of hot pixels and test for any source of noise in ACS CCD detectors. The files, biases and dark will be used to create reference files for science calibration. This programme will be for the enti ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4197 PERIOD COVERED: UT September 12, 2006 (DOY 255) OBSERVATIONS SCHEDULED ACS/HRC 10556 Neutral Gas at Redshift z=0.5 Damped Lyman-alpha systems {DLAs} are used to track the bulk of the neutral hydrogen gas in the Universe. Prior to HST UV spectroscopy, they could only be studied from the ground at redshifts z>1.65. However, HST has now permitted us to discover 41 DLAs at z1} cluster samples. For this ultimate cluster su ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4196 PERIOD COVERED: UT September 11, 2006 (DOY 254) OBSERVATIONS SCHEDULED ACS/HRC 10556 Neutral Gas at Redshift z=0.5 Damped Lyman-alpha systems {DLAs} are used to track the bulk of the neutral hydrogen gas in the Universe. Prior to HST UV spectroscopy, they could only be studied from the ground at redshifts z>1.65. However, HST has now permitted us to discover 41 DLAs at z If the above URL is inoperable, make sure that ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4195 PERIOD COVERED: UT September 08,09,10, 2006 (DOY 251,252,253) OBSERVATIONS SCHEDULED NIC1/NIC2/NIC3 8793 NICMOS Post-SAA calibration - CR Persistence Part 4 A new procedure proposed to alleviate the CR-persistence problem of NICMOS. Dark frames will be obtained immediately upon exiting the SAA contour 23, and every time a NICMOS exposure is scheduled within 50 minutes of coming out of the SAA. The darks will be obtained ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4194 PERIOD COVERED: UT September 07, 2006 (DOY 250) OBSERVATIONS SCHEDULED ACS/HRC 10563 Accurate dark-matter mass profiles in 3 elliptical galaxies as a test of CDM A critical test of the successful Lambda-CDM picture for structure formation is the measurement of the power law exponent, gamma, of the centre of dark matter density profiles, predicted to lie in the range 1.0-1.5. Measurements of gamma derived from rotation cu ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4193 PERIOD COVERED: UT September 06, 2006 (DOY 249) OBSERVATIONS SCHEDULED ACS/HRC 10738 Earth Flats Sky flats will be obtained by observing the bright Earth with the HRC and WFC. These observations will be used to verify the accuracy of the flats currently in the pipeline and to monitor any changes. Weekly coronagraphic monitoring is required to assess the changing position of the spots. ACS/HRC 10878 An ACS Prism Snapshot ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4192 PERIOD COVERED: UT September 05, 2006 (DOY 248) OBSERVATIONS SCHEDULED ACS/HRC 10741 Continuum L-Flats for Ramp Filters This program will obtain data to be used for creation of continuum L-flats for ACS ramp filters. ACS/HRC 10870 The Ring Plane Crossings of Uranus in 2007 The rings of Uranus turn edge-on to Earth in May and August 2007. In between, we will have a rare opportunity to see the unlit face of the rings. W ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4191 PERIOD COVERED: UT September 01,02,03,04, 2006 (DOY 244,245,246,247) OBSERVATIONS SCHEDULED NIC1/NIC2/NIC3 8794 NICMOS Post-SAA calibration - CR Persistence Part 5 A new procedure proposed to alleviate the CR-persistence problem of NICMOS. Dark frames will be obtained immediately upon exiting the SAA contour 23, and every time a NICMOS exposure is scheduled within 50 minutes of coming out of the SAA. The darks will be ob ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4190 PERIOD COVERED: UT August 31, 2006 (DOY 243) OBSERVATIONS SCHEDULED ACS/HRC 10738 Earth Flats Sky flats will be obtained by observing the bright Earth with the HRC and WFC. These observations will be used to verify the accuracy of the flats currently in the pipeline and to monitor any changes. Weekly coronagraphic monitoring is required to assess the changing position of the spots. ACS/HRC 10800 Kuiper Belt Binaries: P ...Continue Reading