Hubble Deep Field South (HDF-S)
Three years after the Hubble Deep Field observations in the Northern Hemisphere, astronomers turned the telescope's gaze to the southern skies. Hubble peered down another narrow corridor of space, uncovering a dazzling assortment of thousands of never-before-seen galaxies that stretch to 12 billion light-years away.
For this 10-day-long observation, astronomers used Hubble's Wide Field Planetary Camera 2 (WFPC2) and two newly installed instruments, the Near Infrared Camera and Multi-object Spectrometer (NICMOS) and the Space Telescope Imaging Spectrograph (STIS).
The narrow patch of sky also included a distant quasar, whose light provided a powerful three-dimensional probe of the universe's hidden structure.
The HDF-S observations, coupled with the HDF-N study, give astronomers two "core samples" of information to better understand the structure of the cosmos.