The HRS will be used in an attempt to detect white dwarf companions around several barium and CH stars. This will test the theory that the abundance anomalies in these stars were caused by mass transfer from the precursors of the white dwarfs. The sequences will include moderate-sized rapid mode observations. The observa- tions appear to have executed as planned. The stability of the FOS Blue side wavelength scale and spectral locations will be measured.
All observations are internals.