records what objects in one run are re-observed in other runs.

When an object is missing in the second run we use the nearest object in the second run Misses are flag and colored as (green: well inside the overlap
  • green: well inside the overlap,
  • yellow: on the edge of the overlap
  • red: covered by a mask in the second run.

The match radius is 1 arcsecond (beyond that it is considered a miss.
The object also points to a canoncal 'match head' object of the cluster.

Index TypeKey or Field List
primary keyobjID1, objID2
foreign keyPhotoObjAll(objID)
foreign keyMatchHead(objid)
covering indexmatchHead