HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4970 PERIOD COVERED: 5am November 10 - 5am November 12, 2009 (DOY 314/10:00z-316/10:00z) OBSERVATIONS SCHEDULED WFC3/IR/S/C 11929 IR Dark Current Monitor Analyses of ground test data showed that dark current signals are more reliably removed from science data using darks taken with the same exposure sequences as the science data, than with a single dark current image scaled by desired exposure time. T ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4967 PERIOD COVERED: 5am November 5 - 5am November 6, 2009 (DOY 309/10:00z-310/10:00z) OBSERVATIONS SCHEDULED COS/NUV/FUV/WFC3/UV/IR 11528 COS-GTO: Studies of the HeII Reionization Epoch Intergalactic Ly-alpha opacity suggests that H I was reionized at z ~ 6, while He II reionization was delayed to z ~ 3. Both epochs are slightly in disagreement with recent (WMAP-3) inferences from the CMB optical dep ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT       #4965 PERIOD COVERED: 5am November 3 - 5am November 4, 2009 (DOY 307/10:00z-308/10:00z) OBSERVATIONS SCHEDULED ACS/WFC 11782 Measuring the Shape and Orientation of the Galactic Dark-Matter Halo using Hypervelocity Stars We propose to obtain high-resolution images of five hypervelocity stars in the Galactic halo in order to establish the first-epoch astrometric frame for them, as a part of a long- ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4964 PERIOD COVERED: 5am November 2 - 5am November 3, 2009 (DOY 306/10:00z-307/10:00z) OBSERVATIONS SCHEDULED ACS/WFC3 11879 CCD Daily Monitor (Part 1) This program comprises basic tests for measuring the read noise and dark current of the ACS WFC and for tracking the growth of hot pixels. The recorded frames are used to create bias and dark reference images for science data reduction and calibration. ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4963 PERIOD COVERED: 5am October 30 - 5am November 2, 2009 (DOY 303/09:00z-306/10:00z) OBSERVATIONS SCHEDULED COS/FUV 11997 FUV Internal/External Wavelength Scale Monitor This program monitors the offsets between the wavelength scale set by the internal wavecal versus that defined by absorption lines in external targets. This is accomplished by observing two external targets in the SMC: SK191 with G130 ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4962 PERIOD COVERED: 5am October 29 - 5am October 30, 2009 (DOY 302/09:00z-303/09:00z) OBSERVATIONS SCHEDULED ACS/WFC 11689 Direct Observations of Dark Matter from a Second Bullet: The Spectacular Abell 2744 Vigorous cluster mergers provide a unique opportunity to directly "see" dark matter and to probe its properties through the analysis of the segregation of the baryonic and non-baryonic c ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4961 PERIOD COVERED: 5am October 28 - 5am October 29, 2009 (DOY 301/09:00z-302/09:00z) OBSERVATIONS SCHEDULED ACS/WFC3 11879 CCD Daily Monitor (Part 1) This program comprises basic tests for measuring the read noise and dark current of the ACS WFC and for tracking the growth of hot pixels. The recorded frames are used to create bias and dark reference images for science data reduction and calibration. ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4960 PERIOD COVERED: 5am October 27 - 5am October 28, 2009 (DOY 300/09:00z-301/09:00z) OBSERVATIONS SCHEDULED ACS/WFC 11689 Direct Observations of Dark Matter from a Second Bullet: The Spectacular Abell 2744 Vigorous cluster mergers provide a unique opportunity to directly "see" dark matter and to probe its properties through the analysis of the segregation of the baryonic and non-baryonic c ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4959 PERIOD COVERED: 5am October 26 - 5am October 27, 2009 (DOY 299/09:00z-300/09:00z) OBSERVATIONS SCHEDULED ACS/WFC3 11879 CCD Daily Monitor (Part 1) This program comprises basic tests for measuring the read noise and dark current of the ACS WFC and for tracking the growth of hot pixels. The recorded frames are used to create bias and dark reference images for science data reduction and calibration. ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to Collect World Class Science DAILY REPORT      #4958 PERIOD COVERED: 5am October 23 - 5am October 26, 2009 (DOY 296/09:00z-299/09:00z) OBSERVATIONS SCHEDULED WFC3/IR/S/C 11929 IR Dark Current Monitor Analyses of ground test data showed that dark current signals are more reliably removed from science data using darks taken with the same exposure sequences as the science data, than with a single dark current image scaled by desired exposure time. The ...Continue Reading