تقرير
A High Resolution Spectrograph for the 72 cm Waltz Telescope at Landessternwarte, Heidelberg
| العنوان: | A High Resolution Spectrograph for the 72 cm Waltz Telescope at Landessternwarte, Heidelberg |
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| المؤلفون: | 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., Seemann, U., Tietz, J., Wagner, K. |
| سنة النشر: | 2016 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Instrumentation and Methods for Astrophysics |
| الوصف: | The Waltz Spectrograph is a fiber-fed high-resolution \'echelle spectrograph for the 72 cm Waltz Telescope at the Landessternwarte, Heidelberg. It uses a 31.6 lines/mm 63.5$^{\circ}$ blaze angle \'echelle grating in white-pupil configuration, providing a spectral resolving power of $R\sim$65,000 covering the spectral range between 450$-$800\,nm in one CCD exposure. A prism is used for cross-dispersion of \'echelle orders. The spectrum is focused by a commercial apochromat onto a 2k$\times$2k CCD detector with 13.5$\mu$m 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. Comment: 7 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1117/12.2232730 |
| URL الوصول: | http://arxiv.org/abs/1608.06090 |
| رقم الأكسشن: | edsarx.1608.06090 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1117/12.2232730 |
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