@inproceedings{6f079d456f604644bdec53f818beccc4,
title = "The GMT telescope metrology system design",
abstract = "The Giant Magellan Telescope will be a 25.4-m visible and infrared telescope at Las Campanas Observatory. The optical design consists of 7 8.4-m primary mirror segments that reflect light to 7 secondary mirror segments in a doubly segmented direct Gregorian configuration. GMT is developing a Telescope Metrology System (TMS) to decrease the complexity of alignment and increase observatory efficiency. The TMS has been developed to Preliminary Design Review level. A prototyping, modelling, and analysis effort has been completed. All components of the system were matured, and the edge-sensing strategy was significantly revised. This paper describes the current TMS design.",
keywords = "3D metrology, absolute distance interferometry, active optics, differential distance measuring interferometry, edge sensing, laser trackers, laser truss, pointing models, telescope alignment",
author = "Sitarski, \{Breann N.\} and Andrew Rakich and Hugo Chiquito and Wylie Rosenthal and Bouchez, \{Antonin H.\} and William Schoenell and Bo Xin and Priscila Pires and Joel Nissen and P. Schurter and Demers, \{Richard T.\} and Peter Thompson and Brian McLeod and Bijan Nemati and Glenn Brossus and Brian Walls and Heejoo Choi and Guillermo Gonzalez and David Nemati",
note = "Publisher Copyright: {\textcopyright} 2022 SPIE.; Ground-Based and Airborne Telescopes IX 2022 ; Conference date: 17-07-2022 Through 22-07-2022",
year = "2022",
doi = "10.1117/12.2630598",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Marshall, \{Heather K.\} and Jason Spyromilio and Tomonori Usuda",
booktitle = "Ground-Based and Airborne Telescopes IX",
}