FLAMINGOS-2: the facility near-infrared wide-field imager and multi-object spectrograph for Gemini

摘要

We report on the design, on-sky performance, and status of the FLAMINGOS-2 instrument – the fully-cryogenic facilitynear-infrared imager and multi-object spectrograph for the Gemini 8-meter telescopes. FLAMINGOS-2 has a refractiveall-spherical optical system providing 0.18-arcsecond pixels and a 6.2-arcminute circular field-of-view on a 2048x2048-pixel HAWAII-2 0.9-2.4 μm detector array. A slit/decker wheel mechanism allows the selection of up to 9 multi-objectlaser-machined plates or 3 long slits for spectroscopy over a 6x2-arcminute field of view, and selectable grisms provideresolutions from ~1300 to ~3000 over the entire spectrograph bandpass. FLAMINGOS-2 is also compatible with theGemini Multi-Conjugate Adaptive Optics system, providing multi-object spectroscopic capabilities over a 3x1-arcminutefield with high spatial resolution (0.09-arcsec/pixel). We review the designs of optical, mechanical, electronics,software, and On-Instrument WaveFront Sensor subsystems. We also present the on-sky performance measured duringacceptance testing in 2009, as well as current status of the project and future plans.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.