The Large Fiber Array Spectroscopic Telescope: Fiber Feed and Spectrometer Conceptual Design

Chad F. Bender*, J. Roger Angel, Joel Berkson, Peter Gray, Samuel Halverson, Hyukmo Kang, Daewook Kim, Andrew Monson, Chang Jin Oh, Matthew Rademacher, Christian Schwab, Andrew Young, Dennis Zaritsky

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

1 Citation (Scopus)

Abstract

The Large Fiber Array Spectroscopic Telescope, LFAST, will use optical fibers to combine light from thousands of small telescopes at centrally located high-resolution spectrometers. LFAST aims to use mass replication of small, self-contained telescope systems to provide ELT sized collecting area and spectroscopic capabilities at a drastically reduced price. However, fundamental constraints such as étendue, fiber modal noise, and focal-plane sampling that affect the size and complexity of spectrometers for single telescope ELTs also impact LFAST. We are carrying out a three year study to tackle these challenges. In this paper, we describe the conceptual designs for the fiber feed assemblies that carry light from the individual telescopes to a centralized location, and the high-resolution spectrometer that accepts this light.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy IX
EditorsChristopher J. Evans, Julia J. Bryant, Kentaro Motohara
Place of PublicationWashington, DC
PublisherSPIE
Pages1-8
Number of pages8
ISBN (Electronic)9781510653504
ISBN (Print)9781510653498
DOIs
Publication statusPublished - 2022
EventConference on Ground-based and Airborne Instrumentation for Astronomy IX - Montreal, Canada
Duration: 17 Jul 202222 Jul 2022

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume12184
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceConference on Ground-based and Airborne Instrumentation for Astronomy IX
Country/TerritoryCanada
CityMontreal
Period17/07/2222/07/22

Keywords

  • LFAST
  • telescopes
  • fiber-feeds
  • spectrometers

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