The Hubble Source Catalog (HSC) is designed to optimize science from the Hubble Space Telescope
by combining the tens of thousands visit-based source lists in the Hubble Legacy Archive (HLA)
into a single master catalog.
The HSC Summary search displays a single row entry for each object,
as defined by a set of detections that have been cross-matched and hence are believed to be a single object.
Averaged values for magnitudes and other relevant parameters are provided.
The catalog currently contains over 16 million entries.