ISAAC LW Telluric Line Atlas
Abstract
We present a status report on a project with the aim to enhance the wavelength calibration of ISAAC's long wavelength spectroscopic mode. We measure telluric standard stars with high signal/noise and use the comparison with theoretical spectra of the telluric lines for the wavelength calibration. We show that calibrations done with arc-lines only can be wrong by up to 0.2 μm. The new atlas of telluric lines allows a spectral calibration with a precision of 0.003 μm.
- Publication:
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2007 ESO Instrument Calibration Workshop
- Pub Date:
- 2008
- DOI:
- 10.1007/978-3-540-76963-7_20
- Bibcode:
- 2008eic..work..149P
- Keywords:
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- Physics and Astronomy