Maintenance concept for the Extremely Large Telescopes

The maintenance concept provides the basis for overall dependability design requirements Extremely Large Telescopes (ELTs), such as European Southern Observatory’s ELT, Thirty Meter Telescope (TMT), and Giant Magellan (GMT). contains planning of support policy complete operational system ELTs. way in which was developed ELTs is shown, similarities differences objectives will be achieved identified. methodology based on explaining seven common points (maintenance philosophy/levels; types strategies; designing dependability: reliability, availability, maintainability; organizational structure responsibilities operations; configuration management; key performance indicators challenges, opportunities, lessons learned) condensing knowledge during process generation application concept.