An project

LSST DRP (Level 2)
Catalog Photometric Redshifts

  • M. L. Graham


The purpose of this document is to begin to assemble the diversity of motivations driving the inclusion of photometric redshifts in the LSST Level 2 Object Catalog, and prepare to make a decision on what kind of photo-z products will be used. The roadmap for this process is described in Section [sec:intro]. We consider the photo-z use-cases in order to validate that the type of photo-z incorporated into the Level 2 DRP catalog, and the format in which it is stored, meets the needs of both DM and the community. We also compile potential evaluation methods for photo-z algorithms, and demonstrate these options by applying them to the photo-z results of two off-the-shelf photo-z estimators. The long-term plan is for this document to develop over time and eventually describe the decision-making process and the details of the selected algorithm(s) and products. Preliminary recommendations can be found in Section [sec:intro].