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- W2046561413 abstract "One of the first light instruments for the Giant Magellan Telescope (GMT) will be the GMT-Consortium Large EarthFinder (G-CLEF). It is an optical band echelle spectrograph that is fiber fed to enable high stability. One of the keycapabilities of G-CLEF will be its extremely precise radial velocity (PRV) measurement capability. The RV precisiongoal is 10 cm/sec, which is expected to be achieved with advanced calibration methods and the use of the GMT adaptiveoptics system. G-CLEF, as part of the GMT suite of instruments, is being designed within GMT's automatedrequirements management system. This includes requirements flow down, traceability, error budgeting, and systemscompliance. Error budgeting is being employed extensively to help manage G-CLEF technical requirements and ensurethat the top level requirements are met efficiently. In this paper we discuss the G-CLEF error budgeting process,concentrating on the PRV precision and instrument throughput budgets. The PRV error budgeting process is covered indetail, as we are taking a detailed systems error budgeting approach to the PRV requirement. This has provenparticularly challenging, as the precise measurement of radial velocity is a complex process, with error sources that aredifficult to model and a complex calibration process that is integral to the RV measurement. The PRV budget combinestraditional modeling and analysis techniques, where applicable, with semi-empirical techniques, as necessary.Extrapolation from existing PRV instruments is also used in the budgeting process." @default.
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- W2046561413 date "2014-07-28" @default.
- W2046561413 modified "2023-10-17" @default.
- W2046561413 title "A novel systems engineering approach to the design of a precision radial velocity spectrograph: the GMT-Consortium Large Earth Finder (G-CLEF)" @default.
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- W2046561413 doi "https://doi.org/10.1117/12.2056329" @default.
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