MOC - HEALPix Multi-Order Coverage map Version 1.0
classification
🌌 astro-ph.IM
keywords
coveragehealpixmechanismmulti-orderregionsablealgorithmarbitrary
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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.
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