RHEA: the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph

Tobias Feger, Carlos Bacigalupo, Timothy R. Bedding, Joao Bento, David Coutts, Michael Ireland, Quentin Parker, Aaron Rizzuto, Izabela Spaleniak

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

Abstract

We present the opto-mechanical design and the characterization of the Replicable High-resolution Exoplanet and Asteroseismology (RHEA) spectrograph. RHEA is an ultra-compact fiber-fed echelle spectrograph designed to be used at 0.2 0.4 m class robotic telescopes where long term dedicated projects are possible. The instrument will be primarily used for radial velocity (RV) studies of low to intermediate-mass giant stars for the purpose of searching for hot Jupiters and using asteroseismology to simultaneously measure the host star parameters and de-correlate stellar pulsations. The optical design comprises a double-pass (i.e. near Littrow) configuration with prism cross-disperser and single-mode fiber (SMF) input. The spectrograph has a resolving power of R>70,000 and operates at 430670 nm with minimum order separation of similar to 180 mu m. This separation allows a 1x6 photonic lantern integration at a later stage which is currently under development. The current design is built with the aim of creating an inexpensive and replicable unit. The spectrograph is optimised for long-baseline RV observations through careful temperature stabilisation and simultaneous wavelength calibration. As a further improvement the echelle grating is housed in a vacuum chamber to maintain pressure stability. The performance of the current prototype is currently being tested on a 0.4 m telescope at the Macquarie University Observatory.

LanguageEnglish
Title of host publicationGround-based and airborne instrumentation for astronomy V
EditorsSuzanne K. Ramsay, Ian S. McLean, Hideki Takami
Place of PublicationWashington, DC
PublisherSPIE
Pages91477I-1-91477I-12
Number of pages12
ISBN (Electronic)9780819496157
DOIs
Publication statusPublished - 2014
Event5th Conference on Ground-Based and Airborne Instrumentation for Astronomy - Montreal, Canada
Duration: 22 Jun 201426 Jun 2014

Publication series

NameProceedings of SPIE
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Volume9147
ISSN (Print)0277-786X

Conference

Conference5th Conference on Ground-Based and Airborne Instrumentation for Astronomy
CountryCanada
CityMontreal
Period22/06/1426/06/14

Keywords

  • single-mode spectrograph
  • high-resolution
  • vacuum chamber
  • exoplanets
  • asteroseismology
  • NOISE

Cite this

Feger, T., Bacigalupo, C., Bedding, T. R., Bento, J., Coutts, D., Ireland, M., ... Spaleniak, I. (2014). RHEA: the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph. In S. K. Ramsay, I. S. McLean, & H. Takami (Eds.), Ground-based and airborne instrumentation for astronomy V (pp. 91477I-1-91477I-12). [91477I] (Proceedings of SPIE; Vol. 9147). Washington, DC: SPIE. https://doi.org/10.1117/12.2055600
Feger, Tobias ; Bacigalupo, Carlos ; Bedding, Timothy R. ; Bento, Joao ; Coutts, David ; Ireland, Michael ; Parker, Quentin ; Rizzuto, Aaron ; Spaleniak, Izabela. / RHEA : the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph. Ground-based and airborne instrumentation for astronomy V. editor / Suzanne K. Ramsay ; Ian S. McLean ; Hideki Takami. Washington, DC : SPIE, 2014. pp. 91477I-1-91477I-12 (Proceedings of SPIE).
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abstract = "We present the opto-mechanical design and the characterization of the Replicable High-resolution Exoplanet and Asteroseismology (RHEA) spectrograph. RHEA is an ultra-compact fiber-fed echelle spectrograph designed to be used at 0.2 0.4 m class robotic telescopes where long term dedicated projects are possible. The instrument will be primarily used for radial velocity (RV) studies of low to intermediate-mass giant stars for the purpose of searching for hot Jupiters and using asteroseismology to simultaneously measure the host star parameters and de-correlate stellar pulsations. The optical design comprises a double-pass (i.e. near Littrow) configuration with prism cross-disperser and single-mode fiber (SMF) input. The spectrograph has a resolving power of R>70,000 and operates at 430670 nm with minimum order separation of similar to 180 mu m. This separation allows a 1x6 photonic lantern integration at a later stage which is currently under development. The current design is built with the aim of creating an inexpensive and replicable unit. The spectrograph is optimised for long-baseline RV observations through careful temperature stabilisation and simultaneous wavelength calibration. As a further improvement the echelle grating is housed in a vacuum chamber to maintain pressure stability. The performance of the current prototype is currently being tested on a 0.4 m telescope at the Macquarie University Observatory.",
keywords = "single-mode spectrograph, high-resolution, vacuum chamber, exoplanets, asteroseismology, NOISE",
author = "Tobias Feger and Carlos Bacigalupo and Bedding, {Timothy R.} and Joao Bento and David Coutts and Michael Ireland and Quentin Parker and Aaron Rizzuto and Izabela Spaleniak",
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doi = "10.1117/12.2055600",
language = "English",
series = "Proceedings of SPIE",
publisher = "SPIE",
pages = "91477I--1--91477I--12",
editor = "Ramsay, {Suzanne K.} and McLean, {Ian S.} and Hideki Takami",
booktitle = "Ground-based and airborne instrumentation for astronomy V",
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}

Feger, T, Bacigalupo, C, Bedding, TR, Bento, J, Coutts, D, Ireland, M, Parker, Q, Rizzuto, A & Spaleniak, I 2014, RHEA: the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph. in SK Ramsay, IS McLean & H Takami (eds), Ground-based and airborne instrumentation for astronomy V., 91477I, Proceedings of SPIE, vol. 9147, SPIE, Washington, DC, pp. 91477I-1-91477I-12, 5th Conference on Ground-Based and Airborne Instrumentation for Astronomy, Montreal, Canada, 22/06/14. https://doi.org/10.1117/12.2055600

RHEA : the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph. / Feger, Tobias; Bacigalupo, Carlos; Bedding, Timothy R.; Bento, Joao; Coutts, David; Ireland, Michael; Parker, Quentin; Rizzuto, Aaron; Spaleniak, Izabela.

Ground-based and airborne instrumentation for astronomy V. ed. / Suzanne K. Ramsay; Ian S. McLean; Hideki Takami. Washington, DC : SPIE, 2014. p. 91477I-1-91477I-12 91477I (Proceedings of SPIE; Vol. 9147).

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

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T2 - the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph

AU - Feger, Tobias

AU - Bacigalupo, Carlos

AU - Bedding, Timothy R.

AU - Bento, Joao

AU - Coutts, David

AU - Ireland, Michael

AU - Parker, Quentin

AU - Rizzuto, Aaron

AU - Spaleniak, Izabela

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Y1 - 2014

N2 - We present the opto-mechanical design and the characterization of the Replicable High-resolution Exoplanet and Asteroseismology (RHEA) spectrograph. RHEA is an ultra-compact fiber-fed echelle spectrograph designed to be used at 0.2 0.4 m class robotic telescopes where long term dedicated projects are possible. The instrument will be primarily used for radial velocity (RV) studies of low to intermediate-mass giant stars for the purpose of searching for hot Jupiters and using asteroseismology to simultaneously measure the host star parameters and de-correlate stellar pulsations. The optical design comprises a double-pass (i.e. near Littrow) configuration with prism cross-disperser and single-mode fiber (SMF) input. The spectrograph has a resolving power of R>70,000 and operates at 430670 nm with minimum order separation of similar to 180 mu m. This separation allows a 1x6 photonic lantern integration at a later stage which is currently under development. The current design is built with the aim of creating an inexpensive and replicable unit. The spectrograph is optimised for long-baseline RV observations through careful temperature stabilisation and simultaneous wavelength calibration. As a further improvement the echelle grating is housed in a vacuum chamber to maintain pressure stability. The performance of the current prototype is currently being tested on a 0.4 m telescope at the Macquarie University Observatory.

AB - We present the opto-mechanical design and the characterization of the Replicable High-resolution Exoplanet and Asteroseismology (RHEA) spectrograph. RHEA is an ultra-compact fiber-fed echelle spectrograph designed to be used at 0.2 0.4 m class robotic telescopes where long term dedicated projects are possible. The instrument will be primarily used for radial velocity (RV) studies of low to intermediate-mass giant stars for the purpose of searching for hot Jupiters and using asteroseismology to simultaneously measure the host star parameters and de-correlate stellar pulsations. The optical design comprises a double-pass (i.e. near Littrow) configuration with prism cross-disperser and single-mode fiber (SMF) input. The spectrograph has a resolving power of R>70,000 and operates at 430670 nm with minimum order separation of similar to 180 mu m. This separation allows a 1x6 photonic lantern integration at a later stage which is currently under development. The current design is built with the aim of creating an inexpensive and replicable unit. The spectrograph is optimised for long-baseline RV observations through careful temperature stabilisation and simultaneous wavelength calibration. As a further improvement the echelle grating is housed in a vacuum chamber to maintain pressure stability. The performance of the current prototype is currently being tested on a 0.4 m telescope at the Macquarie University Observatory.

KW - single-mode spectrograph

KW - high-resolution

KW - vacuum chamber

KW - exoplanets

KW - asteroseismology

KW - NOISE

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DO - 10.1117/12.2055600

M3 - Conference proceeding contribution

T3 - Proceedings of SPIE

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BT - Ground-based and airborne instrumentation for astronomy V

A2 - Ramsay, Suzanne K.

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Feger T, Bacigalupo C, Bedding TR, Bento J, Coutts D, Ireland M et al. RHEA: the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph. In Ramsay SK, McLean IS, Takami H, editors, Ground-based and airborne instrumentation for astronomy V. Washington, DC: SPIE. 2014. p. 91477I-1-91477I-12. 91477I. (Proceedings of SPIE). https://doi.org/10.1117/12.2055600