We present a preliminary conceptual optical design for GMACS, a wide field, multi-object, optical spectrograph currently being developed for the Giant Magellan Telescope (GMT). We include details of the optical design requirements derived from the instrument scientific and technical objectives and demonstrate how these requirements are met by the current design. Detector specifications, field acquisition/alignment optics, and optical considerations for the active flexure control system are also discussed.
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Luke M. Schmidt ; Rafael Ribeiro ; Keith Taylor ; Damien Jones ; Travis Prochaska, et al.
Optical design concept for the Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS)
", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 9908A4 (August 9, 2016); doi:10.1117/12.2233543; http://dx.doi.org/10.1117/12.2233543