picture shows the Space Telescope Imaging Spectrograph
(STIS) in a caddy in a clean room at Ball Aerospace
in Boulder, Colo., where it was manufactured.
resides in an axial bay behind the Hubble main
mirror. STIS is nearly seve feet by three feet
by three feet and weighs over 800 pounds. The
instrument is designed to work in three different
wavelength regions, each with its own detector.
Scientists using STIS focus their science on many
areas, including the search for massive black
holes; the measurement of distribution of matter
in the universe; the study of stars forming in
distant galaxies; and the imaging of large (Jupiter-sized)
planets around nearby stars.
STIS instrument provides enhanced capabilities
over the two original spectrograph instruments.
STIS covers a broader wavelength range with two-dimensional
capability, adds a coronograph capability, and
has a high time-resolution capability in the ultraviolet.
This instrument also images and provides objective
prism spectra in the intermediate ultraviolet.