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IVOA Photometry Data Model
Version 1.0

IVOA Recommendation 05 October 2013

Interest/Working Group:
Jesus Salgado Carlos Rodrigo Pedro Osuna Mark Allen Mireille Louys Jonathan McDowell Deborah Baines Jesus Maiz Apellaniz Evanthia Hatziminaoglou Sebastien Derriere Gerard Lemson
Jesus Salgado Pedro Osuna


The Photometry Data Model (PhotDM) standard describes photometry filters, photometric systems, magnitude systems, zero points and its interrelation with the other IVOA data models through a simple data model. Particular attention is given necessarily to optical photometry where specifications of magnitude systems and photometric zero points are required to convert photometric measurements into physical flux density units.

Status of this document

This document has been produced by the Data Model Working Group.
It has been reviewed by IVOA Members and other interested parties, and has been endorsed by the IVOA Executive Committee as an IVOA Recommendation. It is a stable document and may be used as reference material or cited as a normative reference from another document. IVOA's role in making the Recommendation is to draw attention to the specification and to promote its widespread deployment. This enhances the functionality and interoperability inside the Astronomical Community.

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