These earth flats were not displayed. There were no indications of errors in execution or processing. At the minimum geocentric distance, the spatial resolution will be about 38 km, allowing the nucleus to be distinguished from the coma. These comet observations appear to have executed as planned. The stability of the FOS Red side wavelength scale and spectral locations will be measured.
All observations are internals.
The science data from these internal calibration observations were not displayed. The engineering telemetry contained no indications of problems. The theory of radiative levitation predicts that for high enough temperatures, the radiation pressure should prevent elements heavier than H and He from sinking out of the atmosphere of a star. IUE observations of the two DA WDs bright enough to observe were contradictory. One was more metal-rich that predicted and the other showed a pure H atmosphere.