2026-04-16T03:29:30Z http://rofr.ivoa.net/oai ivo://ivoa.net/std/MOC 2023-05-23T14:03:00Z Standard ivo_managed ivo://ivoa.net/std/MOC IVOA Fernique, P. Boch, T. Donaldson, T. Durand, D. O'Mullane, W. Reinecke, M. Taylor, M. 2014-06-02 1.0 Applications WG apps@ivoa.net Virtual observatory The Multi-Order Coverage map method (MOC) is dedicated 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. http://ivoa.net/documents/MOC/ Other Research 1.0