@inproceedings{35821b8f1638407db38db185d39c4b11,
title = "A high-resolution spectrograph for the 72cm Waltz Telescope at Landessternwarte, Heidelberg",
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",
year = "2016",
doi = "10.1117/12.2232730",
language = "English",
isbn = "9781510601956",
series = "Proceedings of SPIE",
publisher = "SPIE",
pages = "1--7",
editor = "Evans, {Christopher J.} and Luc Simard and Hideki Hideki",
booktitle = "Ground-Based and Airborne Instrumentation for Astronomy VI",
address = "United States",
note = "Ground-Based and Airborne Instrumentation for Astronomy VI ; Conference date: 26-06-2016 Through 30-06-2016",
}