MANIFEST is a fibre-fed positioning system designed to enhance the capabilities of the 24.5m Giant Magellan Telescope (GMT). For the first light 14 arcmin field-of-view (FoV), MANIFEST will use the GMT’s current planned instruments: G-CLEF (an echelle resolution spectrograph) and GMACS (low/mid resolution spectrograph). MANIFEST will connect with these existing optical spectrographs and offer three multiplexing and deployable integral field unit (IFU) modes. In the future, a full 20′ FoV mode will be offered using a near-infrared spectrograph. Its unique features include high multiplexing, deployable IFUs, increased spectral resolution, and the potential for simultaneous observations with multiple instruments. MANIFEST will support four key science cases: galactic archaeology, dynamical masses of local dwarf galaxies, galaxy stellar kinematics, and unveiling the reionisation epoch with Lyα. In addition, simulations comparing Starbugs, pick-and-place, Starspines, and Theta-phi positioning technologies determined that the pick-and-place robotic solution offers optimal performance, reliability, and adaptability while minimising technical risk with off-the-shelf components. MANIFEST’s advanced capabilities will ensure efficient survey operations and maximise scientific output, making it a pivotal tool for the GMT.
The Many Instrument Fiber System (MANIFEST) is a facility fiber system for the Giant Magellan Telescope (GMT). MANIFEST will be capable of feeding current and upcoming GMT instruments light from the telescopes full 20-arcmin field of view. The MANIFEST concept uses “Starbugs” – self-motile fiber heads deployed on a glass plate. MANIFEST will enhance the capabilities of different optical and near-infrared spectrographs at the GMT by feeding fibres and providing simultaneous observations. We have so far developed 15 science cases for MANIFEST which are listed under five broad science themes. Many science cases from galactic surveys, nearby galaxy surveys, intergalactic medium tomography, and spatially resolved studies of distant universe are of interest. These science cases drive the instrument requirements, modes of observations, and operation conditions for MANIFEST. Defined from the science cases, MANIFEST offers nine different modes of observations including high multiplexing, multiple and high sensitivity integral-field spectroscopy, polarimetry, and near-infrared spectroscopy. We discuss in this paper the latest developments of GMT/MANIFEST.
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