Mr. Anthony Hebert Profile

Anthony Hebert

at Carnegie Institution for Science

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Author

Publications (6)

Proceedings Article | 29 August 2022 Presentation + Paper

Construction, testing, and commissioning of the SDSS-V Local Volume Mapper telescope system

T. Herbst, Peter Bizenberger, Guillermo Blanc, Florian Briegel, Scott Case, Niv Drory, Tobias Feger, Cynthia Froning, Wolfgang Gaessler, Maximilian Häberle, Anthony Hebert, Juna Kollmeier, Nicholas Konidaris, Markus Kuhlberg, Alicia Lanz, Richard Mathar, Lars Mohr, Soojong Pak, Solange Ramírez, Christopher Ritz, Ralf-Rainer Rohloff, José Sánchez-Gallego, Paula Stępień, Stefanie Wachter, Ross Zhelem, Dmitry Bizyaev

Proceedings Volume 12182, 121821Q (2022) https://doi.org/10.1117/12.2629354

KEYWORDS: Telescopes, Silver, Optical benches, Mirrors, Objectives, Cameras, Calibration, Microscopes, Staring arrays, Spectrographs

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Proceedings Article | 29 August 2022 Poster + Paper

SDSS-V local volume mapper objective optics

Alicia Lanz, Jeffrey Crane, T. Herbst, Peter Bizenberger, Guillermo Blanc, Niv Drory, Cynthia S. Froning, Wolfgang Gaessler, Anthony Hebert, Charles L. Hull, Nicholas P. Konidaris, Solange Ramírez, Stefanie Wachter

Proceedings Volume 12184, 121845T (2022) https://doi.org/10.1117/12.2629633

KEYWORDS: Telescopes, Lenses, Objectives, Optical fabrication, Optical design, Optical components, Spectrographs, Glasses, Optical fibers

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Proceedings Article | 14 December 2020 Poster + Presentation

The SDSS-V local volume mapper fiber cable system

Tobias Feger, Scott Case, Ross Zhelem, Yevgen Kripak, Jon Lawrence, Christian Schwab, Tom Herbst, Guillermo Blanc, Pavan Bilgi, Nicholas Konidaris, Anthony Hebert, Stefanie Wachter, Solange Ramirez, Niv Drory, Cynthia Froning

Proceedings Volume 11447, 114478N (2020) https://doi.org/10.1117/12.2562185

KEYWORDS: Calibration, Spectroscopy, Telescopes, Spectrographs, Stars, Solar system, Lanthanum, Observatories, Optical instrument design, Staring arrays

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Proceedings Article | 13 December 2020 Presentation + Paper

SDSS-V local volume mapper instrument: overview and status

Nicholas Konidaris, Niv Drory, Cynthia Froning, Anthony Hebert, Pavan Bilgi, Guillermo Blanc, Alicia Lanz, Charles Hull, Juna Kollmeier, Solange Ramirez, Stefanie Wachter, Kathryn Kreckel, Soojong Pak, Eric Pellegrini, Andrés Almeida, Scott Case, Ross Zhelem, Tobas Feger, Jon Lawrence, Michael Lesser, Tom Herbst, José Sanchez-Gallego, Matthew Bershady, Sabyasachi Chattopadhyay, Andrew Hauser, Michael Smith, Marsha Wolf, Renbin Yan

Proceedings Volume 11447, 1144718 (2020) https://doi.org/10.1117/12.2557565

KEYWORDS: Telescopes, Spectrographs, Spectroscopes, Stars, Solar system, Lanthanum, Observatories, Clouds, Spectral resolution, Atmospheric sciences

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Proceedings Article | 13 December 2020 Presentation + Paper

The SDSS-V local volume mapper telescope system

T. Herbst, Pavaman Bilgi, Peter Bizenberger, Guillermo Blanc, Florian Briegel, Scott Case, Niv Drory, Tobias Feger, Cynthia Froning, Wolfgang Gaessler, Anthony Hebert, Nicholas Konidaris, Alicia Lanz, Lars Mohr, Soojong Pak, Solange Ramírez, Ralf-Rainer Rohloff, José Sánchez-Gallego, Stefanie Wachter

Proceedings Volume 11445, 114450J (2020) https://doi.org/10.1117/12.2561419

KEYWORDS: Telescopes, Calibration, Spectrographs, Lanthanum, Spatial resolution, Optical instrument design, Observatories, Spectral resolution, Galactic astronomy, Sun

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The Sloan Digital Sky Survey V (SDSS-V) is an all-sky spectroscopic survey of <6 million objects, designed to decode the history of the Milky Way, reveal the inner workings of stars, investigate the origin of solar systems, and track the growth of supermassive black holes across the Universe. The Local Volume Mapper (LVM) is one of three surveys that form SDSS-V. LVM will employ a coordinated system of four telescopes feeding three fiber spectrographs at Las Campanas Observatory in Chile. The goal is to map approximately 2500 square degrees of the Galactic plane over the wavelength range 360-980 nm with R~4000 spectral resolution. These observations will reveal for the first time how distinct gaseous environments within the Galaxy interact with each other and with the stellar population, producing the large-scale interstellar medium that we observe. Accurately mapping and calibrating a substantial portion of the sky at this spatial resolution requires a unique type of telescope system. Each of the four LVM telescopes has a diameter of 16 cm, making them considerably smaller and lighter than the instruments they feed. One telescope will host the science IFU containing ~1800 fibers arranged in a close-packed hexagon. Two additional Calibration telescopes will observe fields adjacent to the science IFU, in order to calibrate out terrestrial airglow and other geo-coronal emission. The fourth, Spectrophotometric telescope will make rapid observations of bright stars (typically 12 during a single IFU / Calibration exposure) to correct for telluric absorption lines and overall extinction. The fibers from all three types of telescope will be interspersed in the entrance slits of the spectrographs, allowing for simultaneous science and calibration exposures. Although considerably smaller than the next generation of giants, the LVM telescopes must also operate close to the limits of physical optics, and the geometry and scope of the LVM survey present unique challenges. For example, with this type of telescope at the Las Campanas site, the effects of optical aberrations, diffraction, seeing, and (uncorrected) atmospheric dispersion are all of comparable scale. This, coupled with the need for repeated and reliable measurements over years, leads to some unconventional design choices. This paper presents the preliminary design of the LVM telescope system and discusses the requirements and tradeoffs that led to the baseline choices.

Proceedings Article | 6 July 2018 Paper

GMT M1 subsystem: status, design and testing

Francisco Aguayo, Dave Ashby, Erich Bugueno, Barbara Fischer, John Ford, Peter Gray, Michael Gusick, Anthony Hebert, Zaven Kechichian, Trupti Ranka, Dev Sharma, Jose Soto, Hector Swett, Divya Thanasekaran, Frank Tian, Abhijit Wadhavkar

Proceedings Volume 10700, 1070036 (2018) https://doi.org/10.1117/12.2312937

KEYWORDS: Mirrors, Actuators, Control systems, Telescopes, Fluctuations and noise, Interfaces, Sensors, Control systems design, Prototyping, Calibration

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