  We have observed the supernova remnant (SNR) G290.1-0.8 in the 21-cm HI line
and the 20-cm radio continuum using the Australia Telescope Compact Array
(ATCA). The HI data were combined with data from the Southern Galactic Plane
Survey to recover the shortest spatial frequencies. In contrast, HI absorption
was analyzed by filtering extended HI emission, with spatial frequencies
shorter than 1.1 k-lambda. The low-resolution ATCA radio continuum image of the
remnant shows considerable internal structure, resembling a network of
filaments across its 13 arcmin diameter. A high-resolution ATCA radio continuum
image was also constructed to study the small scale structure in the SNR. It
shows that there are no structures smaller than ~17", except perhaps for a
bright knot to the south, which is probably an unrelated object. The HI
absorption study shows that the gas distribution and kinematics in front of SNR
G290.1-0.8 are complex. We estimate that the SNR probably lies in the Carina
arm, at a distance 7 (+/- 1) kpc. In addition, we have studied nearby sources
in the observed field using archival multiwavelength data to determine their
characteristics.
