October 25th 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4225 PERIOD COVERED: UT October 23, 2006 (DOY 296) 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 z6.5 in the Hubble Ultra Deep Field We propose to o ...Continue Reading
October 23rd 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4224 PERIOD COVERED: UT October 20,21,22, 2006 (DOY 293,294,295) 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 in ...Continue Reading
October 21st 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4223 PERIOD COVERED: UT October 19, 2006 (DOY 292) OBSERVATIONS SCHEDULED ACS/WFC 10816 The Formation History of Andromeda's Extended Metal-Poor Halo We propose deep ACS imaging in the outer spheroid of the Andromeda galaxy, in order to measure the star formation history of its true halo. For the past 20 years, nearly all studies of the Andromeda "halo" were focused on the spheroid within 30 ...Continue Reading
October 21st 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4222 PERIOD COVERED: UT October 18, 2006 (DOY 291) OBSERVATIONS SCHEDULED ACS/HRC 10867 SAINTS - Supernova 1987A INTensive Survey SAINTS is a program to observe SN 1987A, the brightest supernova in 383 years, as it morphs into the youngest supernova remnant at age 19. HST is a unique tool for spatially-resolved observations of the many physical components of SN 1987A. A violent encounter is now underway between the fastest-mo ...Continue Reading
October 19th 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4221 PERIOD COVERED: UT October 17, 2006 (DOY 290) OBSERVATIONS SCHEDULED ACS/WFC 10595 A Reference Database for Accurate Ages and Metallicities of Globular Clusters in the Magellanic Clouds We propose to finalize the compilation of a comprehensive database of high-quality ages and metallicities of Simple Stellar Populations {SSPs} in the Milky Way and the Magellanic Clouds. We will acquire new ACS imagery for 8 young and int ...Continue Reading
October 19th 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4220 PERIOD COVERED: UT October 16, 2006 (DOY 289) OBSERVATIONS SCHEDULED 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 entire lifetime of ACS. Changes f ...Continue Reading
October 16th 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4219 PERIOD COVERED: UT October 13,14,15, 2006 (DOY 286,287,288) 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 obtained in ...Continue Reading
October 13th 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4218 PERIOD COVERED: UT October 12, 2006 (DOY 285) OBSERVATIONS SCHEDULED ACS/WFC 10816 The Formation History of Andromeda's Extended Metal-Poor Halo We propose deep ACS imaging in the outer spheroid of the Andromeda galaxy, in order to measure the star formation history of its true halo. For the past 20 years, nearly all studies of the Andromeda "halo" were focused on the spheroid within 30 kpc of the galaxy's cen ...Continue Reading
October 13th 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4217 PERIOD COVERED: UT October 11, 2006 (DOY 284) OBSERVATIONS SCHEDULED ACS/HRC/WFC 10733 CCD Hot Pixel Annealing Hot pixel annealing will continue to be performed once every 4 weeks. The CCD TECs will be turned off and heaters will be activated to bring the detector temperatures to about +20C. This state will be held for approximately 6 hours, after which the heaters are turned off, the TECs turned on, and the CCDs returne ...Continue Reading
October 12th 2006 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4216 PERIOD COVERED: UT October 10, 2006 (DOY 283) OBSERVATIONS SCHEDULED ACS/HRC/WFC 10733 CCD Hot Pixel Annealing Hot pixel annealing will continue to be performed once every 4 weeks. The CCD TECs will be turned off and heaters will be activated to bring the detector temperatures to about +20C. This state will be held for approximately 6 hours, after which the heaters are turned off, the TECs turned on, and the CCDs returne ...Continue Reading
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