February 26th 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4306 PERIOD COVERED: UT February 23,24,25, 2007 (DOY 054,055,056) 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. Th ...Continue Reading
February 23rd 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4305 PERIOD COVERED: UT February 22, 2007 (DOY 053) OBSERVATIONS SCHEDULED ACS/SBC 10862 Comprehensive Auroral Imaging of Jupiter and Saturn during the International Heliophysical Year A comprehensive set of observations of the auroral emissions from Jupiter and Saturn is proposed for the International Heliophysical Year in 2007, a unique period of especially concentrated measurements of space physi ...Continue Reading
February 22nd 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4304 PERIOD COVERED: UT February 21, 2007 (DOY 052) OBSERVATIONS SCHEDULED ACS/SBC 10862 Comprehensive Auroral Imaging of Jupiter and Saturn during the International Heliophysical Year A comprehensive set of observations of the auroral emissions from Jupiter and Saturn is proposed for the International Heliophysical Year in 2007, a unique period of especially concentrated measurements of space physi ...Continue Reading
February 21st 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4303 PERIOD COVERED: UT February 20, 2007 (DOY 051) OBSERVATIONS SCHEDULED ACS/SBC 10862 Comprehensive Auroral Imaging of Jupiter and Saturn during the International Heliophysical Year A comprehensive set of observations of the auroral emissions from Jupiter and Saturn is proposed for the International Heliophysical Year in 2007, a unique period of especially concentrated measurements of space physi ...Continue Reading
February 21st 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4302 PERIOD COVERED: UT February 16,17,18,19, 2007 (DOY 047,048,049,050) 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 ...Continue Reading
February 16th 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4301 PERIOD COVERED: UT February 15, 2007 (DOY 046) OBSERVATIONS SCHEDULED WFPC2 10520 Resolving the Complex Star Formation History of the Leo I Dwarf Spheroidal Galaxy Determining the star formation histories {SFHs} and chemical evolution of nearby galaxies gives us powerful constrains on the physical processes that regulate galaxy evolution. The SFHs can be measured most accurately by compar ...Continue Reading
February 15th 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4300 PERIOD COVERED: UT February 14, 2007 (DOY 045) OBSERVATIONS SCHEDULED WFPC2 10910 HST / Chandra Monitoring of a Dramatic Flare in the M87 Jet As the nearest galaxy with an optical jet, M87 affords an unparalleled opportunity to study extragalactic jet phenomena at the highest resolution. During 2002, HST and Chandra monitoring of the M87 jet detected a dramatic flare in knot HST-1 located ...Continue Reading
February 14th 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4299 PERIOD COVERED: UT February 13, 2007 (DOY 044) OBSERVATIONS SCHEDULED WFPC2 10918 Reducing Systematic Errors on the Hubble Constant: Metallicity Calibration of the Cepheid PL Relation Reducing the systematic errors on the Hubble constant is still of significance and of immediate importance to modern cosmology. One of the largest remaining uncertainties in the Cepheid-based distance scale {which ...Continue Reading
February 14th 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4298 PERIOD COVERED: UT February 12, 2007 (DOY 043) OBSERVATIONS SCHEDULED NIC2 10798 Dark Halos and Substructure from Arcs & Einstein Rings The surface brightness distribution of extended gravitationally lensed arcs and Einstein rings contains super-resolved information about the lensed object, and, more excitingly, about the smooth and clumpy mass distribution of the lens galaxies. The source and lens infor ...Continue Reading
February 12th 2007 PDT
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT # 4297 PERIOD COVERED: UT February 09,10,11, 2007 (DOY 040,41,42) OBSERVATIONS SCHEDULED NIC1/NIC2/NIC3 8795 NICMOS Post-SAA calibration - CR Persistence Part 6 A new proceedure proposed to alleviate the CR-persistence problem of NICMOS. Dark frames will be obtained immediately upon exiting the SAA contour 23, and everytime a NICMOS exposure is scheduled within 50 minutes of coming out of the SAA. The darks will be obtained in ...Continue Reading
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