These were all normal Visflats. Galactic opacity in the Lyman continuum region is directly related to determination of radiation conditions in the early universe. Images will also be made, to locate the zero-point of the spectra and to resolve structural details in these previously unresolved objects. The images and spectra were well exposed in all frames. The stability of the FOS Red side wavelength scale and spectral locations will be measured.
All observations are internals.
These are internal calibration exposures, and they were not assessed. This is a Cycle 4 GO program to observe atomic hydrogen emission in specified latitude and longitude features on Jupiter in order to study the dynamics of Jupiter's upper atmosphere. All exposures will use the HRS Echelle A with the LSA for the spectral region near 1215 A. Jovian regions will be located by blind pointing from guide stars. The spectra show prominent Lyman-alpha, some of which is geocoronal. From these spectra, which cover the wavelength region 1840-1880 A, the orbital velocity of the companion will be determined.