Paper 13100-250
Paper 13100-250
Prototyping of a large-optic precision adjuster for NFIRAOS
On demand | Presented live 20 June 2024 
Abstract
NFIRAOS (Narrow Field InfraRed Adaptive Optics System) is the first-light adaptive optics system designed for the Thirty Meter Telescope (TMT). NFIRAOS includes a laser guide star wavefront sensor system (NLGS) which contains a trombone mirror assembly that accounts for variations in the sodium layer. Within the trombone mirror assembly, there are two heavy fold-mirrors whose housings contain precision adjusters to align the laser guide stars with the wavefront sensors. The adjuster design has many unknows so a prototype of these adjusters was developed and tested to determine the best design and material selection for use in NLGS.
Presenter
Jeffrey Crane
National Research Council Canada (Canada)
Jeffrey Crane is a mechanical engineer working at the National Research Council of Canada, where he develops instrumentation and adaptive optics systems for current and future telescopes, such as TMT. Prior to joining the National Research Council, Jeff worked in the aerospace industry developing test equipment for gas turbine engines.