Optical ray tracing of echelle spectrographs applied to the wavelength solution for precise radial velocities
We present moes, a ray tracing software package that computes the path of rays through echelle spectrographs. Our algorithm is based on sequential direct tracing with Seidel aberration corrections applied at the detector plane. As a test case, we model the CARMENES VIS spectrograph. After subtractin...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
April 2024
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| In: |
Journal of astronomical telescopes, instruments, and systems
Year: 2024, Volume: 10, Issue: 2, Pages: 1-22 |
| ISSN: | 2329-4221 |
| DOI: | 10.1117/1.JATIS.10.2.028001 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1117/1.JATIS.10.2.028001 Verlag, lizenzpflichtig, Volltext: https://www.spiedigitallibrary.org/journals/Journal-of-Astronomical-Telescopes-Instruments-and-Systems/volume-10/issue-2/028001/Optical-ray-tracing-of-echelle-spectrographs-applied-to-the-wavelength/10.1117/1.JATIS.10.2.028001.full 
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| Author Notes: | Marcelo Tala Pinto, Adrian Kaminski, Andreas Quirrenbach, and Mathias Zechmeister |
| Summary: | We present moes, a ray tracing software package that computes the path of rays through echelle spectrographs. Our algorithm is based on sequential direct tracing with Seidel aberration corrections applied at the detector plane. As a test case, we model the CARMENES VIS spectrograph. After subtracting the best model from the data, the residuals yield an rms of 0.024 pix, setting a new standard for the precision of the wavelength solution of state-of-the-art radial velocity (RV) instruments. By including the influence of the changes of the environment in ray propagation, we are able to predict instrumental RV systematics at the 1 m/s level. |
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| Item Description: | Veröffentlicht: 01. April 2024 Gesehen am 05.09.2025 |
| Physical Description: | Online Resource |
| ISSN: | 2329-4221 |
| DOI: | 10.1117/1.JATIS.10.2.028001 |