Design of the CHIRON high-resolution spectrometer at CTIO

Christian Schwab; Julien F P Spronck; Andrei Tokovinin; Debra A. Fischer

doi:10.1117/12.856709

Design of the CHIRON high-resolution spectrometer at CTIO

Christian Schwab^*, Julien F P Spronck, Andrei Tokovinin, Debra A. Fischer

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

Small telescopes coupled to high resolution spectrometers are powerful tools for Doppler planet searches. They allow for high cadence observations and flexible scheduling; yet there are few such facilities. We present an innovative and inexpensive design for CHIRON, a high resolution (R∼80.000) Echelle spectrometer for the 1.5m telescope at CTIO. Performance and throughput are very good, over the whole spectral range from 410 to 870nm, with a peak efficiency of 15% in the iodine absorption region. The spectrograph will be fibre-fed, and use an iodine cell for wavelength calibration. An image slicer permits a moderate beam size. We use commercially available, high performance optical components, which is key for quick and efficient implementation. We discuss the optical design, opto-mechanical tolerances and resulting image quality.

Original language	English
Title of host publication	Ground-Based and Airborne Instrumentation for Astronomy III
Editors	Ian S. McLean, Suzanne K. Ramsay, Hideki Takami
Place of Publication	Washington, DC
Publisher	SPIE
Pages	1-7
Number of pages	7
Volume	7735
Edition	PART 1
ISBN (Print)	9780819482259
DOIs	https://doi.org/10.1117/12.856709
Publication status	Published - 2010
Externally published	Yes
Event	Ground-Based and Airborne Instrumentation for Astronomy III - San Diego, CA, United States Duration: 27 Jun 2010 → 2 Jul 2010

Other

Other	Ground-Based and Airborne Instrumentation for Astronomy III
Country/Territory	United States
City	San Diego, CA
Period	27/06/10 → 2/07/10

Keywords

Echelle
high resolution spectrograph
Iodine cell technique
Spectrometer design

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10.1117/12.856709

Cite this

@inproceedings{de17d4de298b47e490da2823ee9da8ae,

title = "Design of the CHIRON high-resolution spectrometer at CTIO",

abstract = "Small telescopes coupled to high resolution spectrometers are powerful tools for Doppler planet searches. They allow for high cadence observations and flexible scheduling; yet there are few such facilities. We present an innovative and inexpensive design for CHIRON, a high resolution (R∼80.000) Echelle spectrometer for the 1.5m telescope at CTIO. Performance and throughput are very good, over the whole spectral range from 410 to 870nm, with a peak efficiency of 15% in the iodine absorption region. The spectrograph will be fibre-fed, and use an iodine cell for wavelength calibration. An image slicer permits a moderate beam size. We use commercially available, high performance optical components, which is key for quick and efficient implementation. We discuss the optical design, opto-mechanical tolerances and resulting image quality.",

keywords = "Echelle, high resolution spectrograph, Iodine cell technique, Spectrometer design",

author = "Christian Schwab and Spronck, {Julien F P} and Andrei Tokovinin and Fischer, {Debra A.}",

year = "2010",

doi = "10.1117/12.856709",

language = "English",

isbn = "9780819482259",

volume = "7735",

pages = "1--7",

editor = "McLean, {Ian S.} and Ramsay, {Suzanne K.} and Hideki Takami",

booktitle = "Ground-Based and Airborne Instrumentation for Astronomy III",

publisher = "SPIE",

address = "United States",

edition = "PART 1",

note = "Ground-Based and Airborne Instrumentation for Astronomy III ; Conference date: 27-06-2010 Through 02-07-2010",

}

Schwab, C, Spronck, JFP, Tokovinin, A & Fischer, DA 2010, Design of the CHIRON high-resolution spectrometer at CTIO. in IS McLean, SK Ramsay & H Takami (eds), Ground-Based and Airborne Instrumentation for Astronomy III. PART 1 edn, vol. 7735, 77354G, SPIE, Washington, DC, pp. 1-7, Ground-Based and Airborne Instrumentation for Astronomy III, San Diego, CA, United States, 27/06/10. https://doi.org/10.1117/12.856709

Design of the CHIRON high-resolution spectrometer at CTIO. / Schwab, Christian; Spronck, Julien F P; Tokovinin, Andrei et al.
Ground-Based and Airborne Instrumentation for Astronomy III. ed. / Ian S. McLean; Suzanne K. Ramsay; Hideki Takami. Vol. 7735 PART 1. ed. Washington, DC: SPIE, 2010. p. 1-7 77354G.

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

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T1 - Design of the CHIRON high-resolution spectrometer at CTIO

AU - Schwab, Christian

AU - Spronck, Julien F P

AU - Tokovinin, Andrei

AU - Fischer, Debra A.

PY - 2010

Y1 - 2010

N2 - Small telescopes coupled to high resolution spectrometers are powerful tools for Doppler planet searches. They allow for high cadence observations and flexible scheduling; yet there are few such facilities. We present an innovative and inexpensive design for CHIRON, a high resolution (R∼80.000) Echelle spectrometer for the 1.5m telescope at CTIO. Performance and throughput are very good, over the whole spectral range from 410 to 870nm, with a peak efficiency of 15% in the iodine absorption region. The spectrograph will be fibre-fed, and use an iodine cell for wavelength calibration. An image slicer permits a moderate beam size. We use commercially available, high performance optical components, which is key for quick and efficient implementation. We discuss the optical design, opto-mechanical tolerances and resulting image quality.

AB - Small telescopes coupled to high resolution spectrometers are powerful tools for Doppler planet searches. They allow for high cadence observations and flexible scheduling; yet there are few such facilities. We present an innovative and inexpensive design for CHIRON, a high resolution (R∼80.000) Echelle spectrometer for the 1.5m telescope at CTIO. Performance and throughput are very good, over the whole spectral range from 410 to 870nm, with a peak efficiency of 15% in the iodine absorption region. The spectrograph will be fibre-fed, and use an iodine cell for wavelength calibration. An image slicer permits a moderate beam size. We use commercially available, high performance optical components, which is key for quick and efficient implementation. We discuss the optical design, opto-mechanical tolerances and resulting image quality.

KW - Echelle

KW - high resolution spectrograph

KW - Iodine cell technique

KW - Spectrometer design

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M3 - Conference proceeding contribution

AN - SCOPUS:78149273228

SN - 9780819482259

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EP - 7

BT - Ground-Based and Airborne Instrumentation for Astronomy III

A2 - McLean, Ian S.

A2 - Ramsay, Suzanne K.

A2 - Takami, Hideki

PB - SPIE

CY - Washington, DC

T2 - Ground-Based and Airborne Instrumentation for Astronomy III

Y2 - 27 June 2010 through 2 July 2010

ER -

Design of the CHIRON high-resolution spectrometer at CTIO

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