The HST large programme on omega Centauri -- IV. catalogue of two
  external fields
  In the fourth paper of this series, we present -- and publicly release -- the
state-of-the-art catalogue and atlases for the two remaining parallel fields
observed with the Hubble Space Telescope for the large programme on omega
Centauri. These two fields are located at ~12' from the centre of the globular
cluster (in the West and South-West directions) and were imaged in filters from
the ultraviolet to the infrared. Both fields were observed at two epochs
separated by about 2 years that were used to derive proper motions and to
compute membership probabilities.
