New Horizons Radio Science Experiment (REX) Jupiter Encounter Calibrated Data

This data set contains Calibrated data taken by the New Horizons Radio Science Experiment instrument during the Jupiter encounter mission phase. The New Horizons Jupiter encounter afforded no occultation or bi-static scattering geometries for which REX had sufficient sensitivity. The main REX activity during Jupiter flyby was a pair of radiometric scans of the High Gain Antenna (HGA), across the Jovian disk for the purpose of calibrating the REX radiometer experiment. The scans were conducted with New Horizons at ~100 Jupiter radii (Rj) both in-bound and out-bound, when the angular size of Jupiter was closely matched to the beamwidth of the HGA. The Jovian radiometric profile downlinked from the first scan exhibits high precision, and has been used to calibrate the REX radiometric response. Other activities during the mission phase, not associated with the proximity to Jupiter and with the main purpose of characterizing the instrument, were standard checkout operations, looking for weak tones in the REX band by using a large gain, mapping the HGA beam pattern, and an interference test with other instruments. The time periodof the data is 2007 January 5 through 2007 May 26.