We present an analysis of interstellar absorption along the line of sight to the nearby white dwarf star HZ 43A .
The distance to this star is 68 \pm 13 pc , and the line of sight extends toward the north Galactic pole .
Column densities of O i , N i , and N ii were derived from spectra obtained by the Far Ultraviolet Spectroscopic Explorer ( FUSE ) , the column density of D i was derived from a combination of our FUSE spectra and an archival HST GHRS spectrum , and the column density of H i was derived from a combination of the GHRS spectrum and values derived from EUVE data obtained from the literature .
We find the following abundance ratios ( with 2 \ > \sigma uncertainties ) : D i /H i = ( 1.66 \pm 0.28 ) \times 10 ^ { -5 } , O i /H i = ( 3.63 \pm 0.84 ) \times 10 ^ { -4 } , and N i /H i = ( 3.80 \pm 0.74 ) \times 10 ^ { -5 } .
The N ii column density was slightly greater than that of N i , indicating that ionization corrections are important when deriving nitrogen abundances .
Other interstellar species detected along the line of sight were C ii , C iii , O vi , Si ii , Ar i , Mg ii , and Fe ii ; an upper limit was determined for N iii .
No elements other than H i were detected in the stellar photosphere .