A high-resolution spectrograph for the 72cm Waltz Telescope at Landessternwarte, Heidelberg

M. Tala, P. Heeren, M. Grill, R. J. Harris, J. Stürmer, C. Schwab, T. Gutcke, S. Reffert, A. Quirrenbach, W. Seifert, H. Mandel, L. Geuer, L. Schäffner, G. Thimm, U. Seeman, J. Tietz, K. Wagner

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

Abstract

The Waltz Spectrograph is a fiber-fed high-resolution échelle spectrograph for the 72 cm Waltz Telescope at the Landessternwarte, Heidelberg. It uses a 31.6 lines/mm 63.5° blaze angle échelle grating in white-pupil configuration, providing a spectral resolving power of R ∼ 65,000 covering the spectral range between 450-800nm in one CCD exposure. A prism is used for cross-dispersion of échelle orders. The spectrum is focused by a commercial apochromat onto a 2k×2k CCD detector with 13.5μm per pixel. An exposure meter will be used to obtain precise photon-weighted midpoints of observations, which will be used in the computation of the barycentric corrections of measured radial velocities. A stabilized, newly designed iodine cell is employed for measuring radial velocities with high precision. Our goal is to reach a radial velocity precision of better than 5 m/s, providing an instrument with sufficient precision and sensitivity for the discovery of giant exoplanets. Here we describe the design of the Waltz spectrograph and early on-sky results.

LanguageEnglish
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy VI
EditorsChristopher J. Evans, Luc Simard, Hideki Hideki
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-7
Number of pages7
ISBN (Electronic)9781510601963
ISBN (Print)9781510601956
DOIs
Publication statusPublished - 2016
EventGround-Based and Airborne Instrumentation for Astronomy VI - Edinburgh, United Kingdom
Duration: 26 Jun 201630 Jun 2016

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume9908
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherGround-Based and Airborne Instrumentation for Astronomy VI
CountryUnited Kingdom
CityEdinburgh
Period26/06/1630/06/16

Fingerprint

Radial velocity
Spectrographs
Spectrograph
Telescopes
radial velocity
spectrographs
Telescope
High Resolution
telescopes
Charge coupled devices
Exposure meters
charge coupled devices
high resolution
Centrobaric
Exoplanets
Midpoint
Prism
Optical resolving power
extrasolar planets
pupils

Keywords

  • Doppler method
  • Echelle
  • Iodine cell
  • Radial velocities

Cite this

Tala, M., Heeren, P., Grill, M., Harris, R. J., Stürmer, J., Schwab, C., ... Wagner, K. (2016). A high-resolution spectrograph for the 72cm Waltz Telescope at Landessternwarte, Heidelberg. In C. J. Evans, L. Simard, & H. Hideki (Eds.), Ground-Based and Airborne Instrumentation for Astronomy VI (pp. 1-7). [99086O] (Proceedings of SPIE; Vol. 9908). Bellingham, Washington: SPIE. https://doi.org/10.1117/12.2232730
Tala, M. ; Heeren, P. ; Grill, M. ; Harris, R. J. ; Stürmer, J. ; Schwab, C. ; Gutcke, T. ; Reffert, S. ; Quirrenbach, A. ; Seifert, W. ; Mandel, H. ; Geuer, L. ; Schäffner, L. ; Thimm, G. ; Seeman, U. ; Tietz, J. ; Wagner, K. / A high-resolution spectrograph for the 72cm Waltz Telescope at Landessternwarte, Heidelberg. Ground-Based and Airborne Instrumentation for Astronomy VI. editor / Christopher J. Evans ; Luc Simard ; Hideki Hideki. Bellingham, Washington : SPIE, 2016. pp. 1-7 (Proceedings of SPIE).
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abstract = "The Waltz Spectrograph is a fiber-fed high-resolution {\'e}chelle spectrograph for the 72 cm Waltz Telescope at the Landessternwarte, Heidelberg. It uses a 31.6 lines/mm 63.5° blaze angle {\'e}chelle grating in white-pupil configuration, providing a spectral resolving power of R ∼ 65,000 covering the spectral range between 450-800nm in one CCD exposure. A prism is used for cross-dispersion of {\'e}chelle orders. The spectrum is focused by a commercial apochromat onto a 2k×2k CCD detector with 13.5μm per pixel. An exposure meter will be used to obtain precise photon-weighted midpoints of observations, which will be used in the computation of the barycentric corrections of measured radial velocities. A stabilized, newly designed iodine cell is employed for measuring radial velocities with high precision. Our goal is to reach a radial velocity precision of better than 5 m/s, providing an instrument with sufficient precision and sensitivity for the discovery of giant exoplanets. Here we describe the design of the Waltz spectrograph and early on-sky results.",
keywords = "Doppler method, Echelle, Iodine cell, Radial velocities",
author = "M. Tala and P. Heeren and M. Grill and Harris, {R. J.} and J. St{\"u}rmer and C. Schwab and T. Gutcke and S. Reffert and A. Quirrenbach and W. Seifert and H. Mandel and L. Geuer and L. Sch{\"a}ffner and G. Thimm and U. Seeman and J. Tietz and K. Wagner",
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Tala, M, Heeren, P, Grill, M, Harris, RJ, Stürmer, J, Schwab, C, Gutcke, T, Reffert, S, Quirrenbach, A, Seifert, W, Mandel, H, Geuer, L, Schäffner, L, Thimm, G, Seeman, U, Tietz, J & Wagner, K 2016, A high-resolution spectrograph for the 72cm Waltz Telescope at Landessternwarte, Heidelberg. in CJ Evans, L Simard & H Hideki (eds), Ground-Based and Airborne Instrumentation for Astronomy VI., 99086O, Proceedings of SPIE, vol. 9908, SPIE, Bellingham, Washington, pp. 1-7, Ground-Based and Airborne Instrumentation for Astronomy VI, Edinburgh, United Kingdom, 26/06/16. https://doi.org/10.1117/12.2232730

A high-resolution spectrograph for the 72cm Waltz Telescope at Landessternwarte, Heidelberg. / Tala, M.; Heeren, P.; Grill, M.; Harris, R. J.; Stürmer, J.; Schwab, C.; Gutcke, T.; Reffert, S.; Quirrenbach, A.; Seifert, W.; Mandel, H.; Geuer, L.; Schäffner, L.; Thimm, G.; Seeman, U.; Tietz, J.; Wagner, K.

Ground-Based and Airborne Instrumentation for Astronomy VI. ed. / Christopher J. Evans; Luc Simard; Hideki Hideki. Bellingham, Washington : SPIE, 2016. p. 1-7 99086O (Proceedings of SPIE; Vol. 9908).

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

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N2 - The Waltz Spectrograph is a fiber-fed high-resolution échelle spectrograph for the 72 cm Waltz Telescope at the Landessternwarte, Heidelberg. It uses a 31.6 lines/mm 63.5° blaze angle échelle grating in white-pupil configuration, providing a spectral resolving power of R ∼ 65,000 covering the spectral range between 450-800nm in one CCD exposure. A prism is used for cross-dispersion of échelle orders. The spectrum is focused by a commercial apochromat onto a 2k×2k CCD detector with 13.5μm per pixel. An exposure meter will be used to obtain precise photon-weighted midpoints of observations, which will be used in the computation of the barycentric corrections of measured radial velocities. A stabilized, newly designed iodine cell is employed for measuring radial velocities with high precision. Our goal is to reach a radial velocity precision of better than 5 m/s, providing an instrument with sufficient precision and sensitivity for the discovery of giant exoplanets. Here we describe the design of the Waltz spectrograph and early on-sky results.

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KW - Doppler method

KW - Echelle

KW - Iodine cell

KW - Radial velocities

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Tala M, Heeren P, Grill M, Harris RJ, Stürmer J, Schwab C et al. A high-resolution spectrograph for the 72cm Waltz Telescope at Landessternwarte, Heidelberg. In Evans CJ, Simard L, Hideki H, editors, Ground-Based and Airborne Instrumentation for Astronomy VI. Bellingham, Washington: SPIE. 2016. p. 1-7. 99086O. (Proceedings of SPIE). https://doi.org/10.1117/12.2232730