| 12 | 13 | In the WISE Preliminary Data Release, all sources are described by the equivalent of a single database row, with separate fields in the row for W1-W4 specific measurements, and some fields common to all three filters. For example, the coordinates and observing time are all given as a single value for all three filters. In the conversion to the DVO representation, each measurement of an object is converted to a separate DVO measurement entry. All WISE sources are guaranteed to have all four measurements instantiated, but in some cases the measurements may be upper limits (non-detections in those filters). Below, we list the relationship between the WISE information on the left side of the -> and the DVO measurement field on the right side. Values which are defined for the 4 bands separately use the short cut 'w?value' to mean W1 value, W2 value, etc. Each measurement has one of the 4 WISE photcodes, as appropriate ( |
