  The close-in regions of bright quasars' host galaxies have been difficult to
image due to the overwhelming light from the quasars. With coronagraphic
observations in visible light using the Space Telescope Imaging Spectrograph
(STIS) on the Hubble Space Telescope, we removed 3C 273 quasar light using
color-matching reference stars. The observations revealed the host galaxy from
60" to 0.2" with nearly full angular coverage. Isophote modeling revealed a new
core jet, a core blob, and multiple smaller-scale blobs within 2.5". The blobs
could potentially be satellite galaxies or infalling materials towards the
central quasar. Using archival STIS data, we constrained the apparent motion of
its large scale jets over a 22 yr timeline. By resolving the 3C 273 host galaxy
with STIS, our study validates the coronagraph usage on extragalactic sources
in obtaining new insights into the central ~kpc regions of quasar hosts.
