HighSpec – a Novel High-Resolution Narrow Band-Pass Spectrograph

Yahel Sofer Rimalt, Sagi Ben Ami, Tsevi Mazeh, Sahar Shahaf, Na’ama Hallakoun, Volker Perdelwitz

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

Abstract

We review the novel structure of HighSpec — a spectrograph designed for the Multi-Aperture-Spectroscopic Telescope (MAST). HighSpec’s optical setup achieves high spectral resolution of R ∼ 20, 000, while maintaining an exceptionally high throughput with a peak efficiency of ≳ 55% over a narrow band-pass of ∼ 140 Å. This is made possible by using highly optimized ion-etched binary mask gratings and an electron-multiplying CCD (EMCCD) detector. HighSpec will include three gratings centered at the Ca II H&K, Mg b, and Hα lines. Therefore, HighSpec is highly versatile. Its potential science cases include systematic surveys of flaring M dwarfs; Doppler tomography studies of exoplanet obliquity; dynamical studies of the local population of short-period double white dwarfs; and follow-up of candidate dormant black holes (BHs) and neutrons stars in binary systems.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy IX
EditorsChristopher J. Evans, Julia J. Bryant, Kentaro Motohara
PublisherSPIE
ISBN (Electronic)9781510653498
DOIs
StatePublished - 2022
EventGround-based and Airborne Instrumentation for Astronomy IX 2022 - Montreal, Canada
Duration: 17 Jul 202222 Jul 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12184
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceGround-based and Airborne Instrumentation for Astronomy IX 2022
Country/TerritoryCanada
CityMontreal
Period17/07/2222/07/22

Keywords

  • High-resolution spectroscopy
  • HighSpec
  • MAST
  • ion-etched grating
  • multi-traces spectroscopy

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