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

doi:10.1117/12.2055600

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

^*Corresponding author for this work

Department of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-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.

Original language	English
Title of host publication	Ground-based and airborne instrumentation for astronomy V
Editors	Suzanne K. Ramsay, Ian S. McLean, Hideki Takami
Place of Publication	Washington, DC
Publisher	SPIE
Pages	91477I-1-91477I-12
Number of pages	12
ISBN (Electronic)	9780819496157
DOIs	https://doi.org/10.1117/12.2055600
Publication status	Published - 2014
Event	5th Conference on Ground-Based and Airborne Instrumentation for Astronomy - Montreal, Canada Duration: 22 Jun 2014 → 26 Jun 2014

Publication series

Name	Proceedings of SPIE
Publisher	SPIE-INT SOC OPTICAL ENGINEERING
Volume	9147
ISSN (Print)	0277-786X

Conference

Conference	5th Conference on Ground-Based and Airborne Instrumentation for Astronomy
Country	Canada
City	Montreal
Period	22/06/14 → 26/06/14

Keywords

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

Access to Document

10.1117/12.2055600

Cite this

Feger, T., Bacigalupo, C., Bedding, T. R., 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 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). 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).

@inproceedings{e9af7082e29643c39b57cb3244ec3a5c,

title = "RHEA: the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph",

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",

year = "2014",

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",

address = "United States",

note = "5th Conference on Ground-Based and Airborne Instrumentation for Astronomy ; Conference date: 22-06-2014 Through 26-06-2014",

}

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 proceeding › Conference proceeding contribution › peer-review

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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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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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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