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MOC - HEALPix Multi-Order Coverage map
Version 1.0

IVOA Working Draft 10 September 2013

Interest/Working Group:
Thomas Boch, Tom Donaldson, Daniel Durand, Pierre Fernique, Wil O'Mullane, Martin Reinecke, Mark Taylor
Pierre Fernique


This document describes the Multi-Order Coverage map method (MOC) to specify arbitrary sky regions. The goal is to be able to provide a very fast comparison mechanism between coverage maps. The mechanism is based on the HEALPix sky tessellation algorithm. It is essentially a simple way to map regions of the sky into hierarchically grouped predefined cells.

Status of this document

This is an IVOA Working Draft for review by IVOA members and other interested parties.
It is a draft document and may be updated, replaced, or obsoleted by other documents at any time.It is inappropriate to use IVOA Working Drafts as reference materials or to cite them as other than "work in progress".

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