Abstract
The detection of earth-like exoplanets with the Doppler technique requires extreme precision spectrographs stable over timescales of years. The precision requirement of 10 cm/s is equivalent to a relative uncertainty of 3x10 -10, and, with the typical dispersion of the Echelle spectrographs used for this purpose, translates to a shift of a few nanometers of the spectrum on the detector. Consequently, the instrument must be well understood and optimized in every component and detail. We describe the Yale Doppler diagnostic facility (YDDF), a dedicated bench mounted Echelle spectrograph in our lab at Yale University, which will be used to systematically study the influence of different components at this precision level. The spectrograph bench allows for a flexible optical configuration, high resolution and sampling, and wide spectral coverage. Further, we incorporated a turbulence and guiding simulator to realistically reproduce the situation at the telescope, enabling end-to-end tests of important parameters.
| Language | English |
|---|---|
| Title of host publication | Ground-Based and Airborne Instrumentation for Astronomy IV |
| Editors | Ian S. McLean, Suzanne K. Ramsay, Hideki Takami |
| Place of Publication | Bellingham, WA |
| Publisher | SPIE |
| Pages | 1-10 |
| Number of pages | 10 |
| Volume | 8446 |
| ISBN (Print) | 9780819491473 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | Ground-Based and Airborne Instrumentation for Astronomy IV - Amsterdam, Netherlands Duration: 1 Jul 2012 → 6 Jul 2012 |
Other
| Other | Ground-Based and Airborne Instrumentation for Astronomy IV |
|---|---|
| Country | Netherlands |
| City | Amsterdam |
| Period | 1/07/12 → 6/07/12 |
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Keywords
- Doppler method
- Echelle
- Exoplanets
- Iodine cell
- Radial velocities
- Spectrograph
- Spectroscopy
Cite this
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Investigating spectrograph design parameters with the Yale Doppler diagnostic facility. / Schwab, Christian; Gutcke, Thales; Spronck, Julien F P; Fischer, Debra A.; Szymkowiak, Andrew.
Ground-Based and Airborne Instrumentation for Astronomy IV. ed. / Ian S. McLean; Suzanne K. Ramsay; Hideki Takami. Vol. 8446 Bellingham, WA : SPIE, 2012. p. 1-10 844695.Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › Research › peer-review
TY - GEN
T1 - Investigating spectrograph design parameters with the Yale Doppler diagnostic facility
AU - Schwab, Christian
AU - Gutcke, Thales
AU - Spronck, Julien F P
AU - Fischer, Debra A.
AU - Szymkowiak, Andrew
PY - 2012
Y1 - 2012
N2 - The detection of earth-like exoplanets with the Doppler technique requires extreme precision spectrographs stable over timescales of years. The precision requirement of 10 cm/s is equivalent to a relative uncertainty of 3x10 -10, and, with the typical dispersion of the Echelle spectrographs used for this purpose, translates to a shift of a few nanometers of the spectrum on the detector. Consequently, the instrument must be well understood and optimized in every component and detail. We describe the Yale Doppler diagnostic facility (YDDF), a dedicated bench mounted Echelle spectrograph in our lab at Yale University, which will be used to systematically study the influence of different components at this precision level. The spectrograph bench allows for a flexible optical configuration, high resolution and sampling, and wide spectral coverage. Further, we incorporated a turbulence and guiding simulator to realistically reproduce the situation at the telescope, enabling end-to-end tests of important parameters.
AB - The detection of earth-like exoplanets with the Doppler technique requires extreme precision spectrographs stable over timescales of years. The precision requirement of 10 cm/s is equivalent to a relative uncertainty of 3x10 -10, and, with the typical dispersion of the Echelle spectrographs used for this purpose, translates to a shift of a few nanometers of the spectrum on the detector. Consequently, the instrument must be well understood and optimized in every component and detail. We describe the Yale Doppler diagnostic facility (YDDF), a dedicated bench mounted Echelle spectrograph in our lab at Yale University, which will be used to systematically study the influence of different components at this precision level. The spectrograph bench allows for a flexible optical configuration, high resolution and sampling, and wide spectral coverage. Further, we incorporated a turbulence and guiding simulator to realistically reproduce the situation at the telescope, enabling end-to-end tests of important parameters.
KW - Doppler method
KW - Echelle
KW - Exoplanets
KW - Iodine cell
KW - Radial velocities
KW - Spectrograph
KW - Spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84871986134&partnerID=8YFLogxK
U2 - 10.1117/12.926357
DO - 10.1117/12.926357
M3 - Conference proceeding contribution
SN - 9780819491473
VL - 8446
SP - 1
EP - 10
BT - Ground-Based and Airborne Instrumentation for Astronomy IV
A2 - McLean, Ian S.
A2 - Ramsay, Suzanne K.
A2 - Takami, Hideki
PB - SPIE
CY - Bellingham, WA
ER -