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29 August 2022 Construction update on the Magellan LLAMAS integral field spectrograph
Robert A. Simcoe, Gabor Furesz, Rebecca Masterson, June Stenzel, Danielle Frostig, John Piortowski, Mark Egan, Andrew Malonis, Erik Hinrichsen, Michelle Gabutti, Cody Schneller, Sean MacBride, Rongmon Bordoloi, Michael McDonald
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Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121840D (2022) https://doi.org/10.1117/12.2630489
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada
Abstract
The Large Lenslet Array Magellan Spectrograph (LLAMAS) is a facility-class Integral Field Spectrograph slated for commissioning on the 6.5-meter Magellan Baade telescope in Fall 2022. LLAMAS' Integral Field Unit (IFU) contains a 2400-element microlens array which projects pupil images onto corresponding optical fibers for high fill factor and illumination stability. The IFU subtends a 34" x 34" sky area sampled at 0.75" pitch with ~95% fill. The fibers fan out to eight replicated spectrometers. Each spectrometer covers 350-980nm per exposure at R=2200, split over three separately optimized wavelength channels. A set of 24 thermo-electrically cooled COTS CCD cameras records data for each exposure, with heat loads transferred to a dedicated chilled water loop. We provide a status update on LLAMAS' integration and test, which is in advanced stages. Upon commissioning, LLAMAS will be available to all Magellan users, and any US investigator through NOIRLab allocation of NSF/MSIP nights.
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Robert A. Simcoe, Gabor Furesz, Rebecca Masterson, June Stenzel, Danielle Frostig, John Piortowski, Mark Egan, Andrew Malonis, Erik Hinrichsen, Michelle Gabutti, Cody Schneller, Sean MacBride, Rongmon Bordoloi, and Michael McDonald "Construction update on the Magellan LLAMAS integral field spectrograph", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121840D (29 August 2022); https://doi.org/10.1117/12.2630489
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KEYWORDS
Spectrographs
Optical fibers
Spectrometers
CCD cameras
Commercial off the shelf technology
Fluctuations and noise
Microlens array
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