into account) of AstroObject(s) in the DIA Object Catalog that are expected to be in the Field of View for the current Visit, add to Instance Catalog. fin: AltPath: Use Calculate positions (taking parallaxes and proper motions Basic AstroObject Catalog into account) of AstroObject(s)s in the AstroObject Path instead of DIA Object Catalog that are expected to be in the Field of View for the step:4 Catalog current Visit, add to Instance Catalog. Associate with Instance Catalog WBS: 02C.03.02 Find cross matches between DIA Sources (or DIA Objects; see alternate course) from a Difference Exposure and the predicted positions of AstroObjects, stored in the Instance Catalog. Rejoins Scenario Steps Summary at When (using DIA Source):(see AltPath: Select all DIA Objects with a property change) The detected DIA Source(s) from the current Visit are cross matched with the entries in the Instance Catalog. The matching algorithm will take into account uncertainties in both measured and predicted positions (enabling, for example, matching of Basic Path predicted positions of moving objects with poorly known Orbit(s) that have a substantial error ellipse). The ID of the matching Instance Catalog AstroObject (which may be NULL) is recorded for each DIA Source. fin: All DIA Object(s) whose properties were changed by the current Visit are cross matched with the entries in the Instance Catalog. AltPath: Select Basic The matching algorithm will take into account uncertainties in both all DIA Objects Path measured and predicted positions. with a property step:4 change The IDs of N best matching Instance Catalog AstroObject (which may be NULL) are recorded for each DIA Object. Alert Generation and Distribution WBS:: 02C.03.03 Alert Processing occurs on a nightly basis and produces Transient Alerts. Figure : Generate and Distribute Alerts Generate and Distribute Alerts
into account) of AstroObject(s) in the DIA Object Catalog that are expected to be in the Field of View for the current Visit, add to Instance Catalog. fin: AltPath: Use AstroObject Catalog instead of DIA Object Catalog Calculate positions (taking parallaxes and proper motions into account) of AstroObject(s)s in the AstroObject Catalog that are expected to be in the Field of View for the current Visit, add to Instance Catalog. Basic Path step:4 Associate with Instance Catalog WBS: 02C.03.02 Find cross matches between DIA Sources (or DIA Objects; see alternate course) from a Difference Exposure and the predicted positions of AstroObjects, stored in the Instance Catalog. Scenario Steps Summary Rejoins at Basic Path When (using DIA Source):(see AltPath: Select all DIA Objects with a property change) The detected DIA Source(s) from the current Visit are cross matched with the entries in the Instance Catalog. The matching algorithm will take into account uncertainties in both measured and predicted positions (enabling, for example, matching of predicted positions of moving objects with poorly known Orbit(s) that have a substantial error ellipse). The ID of the matching Instance Catalog AstroObject (which may be NULL) is recorded for each DIA Source. fin: AltPath: Select all DIA Objects with a property change All DIA Object(s) whose properties were changed by the current Visit are cross matched with the entries in the Instance Catalog. The matching algorithm will take into account uncertainties in both measured and predicted positions. The IDs of N best matching Instance Catalog AstroObject (which may be NULL) are recorded for each DIA Object. Basic Path step:4 Alert Generation and Distribution WBS:: 02C.03.03 Alert Processing occurs on a nightly basis and produces Transient Alerts. Figure : Generate and Distribute Alerts Generate and Distribute Alerts