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Proceedings Paper

Advanced 2D spectroscopic predicted data
Author(s): Paul Bristow; Florian Kerber; Michael R. Rosa
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Paper Abstract

We have developed physical models of the dispersive optics of several astronomical spectrographs (STIS, CRIRES, X-shooter). The primary goal is to use these models to provide a physically motivated wavelength calibration of these instruments. However, a further advantage of this approach is the possibility to produce detailed simulations of spectroscopic observations as they would appear on the instrumental detectors in 2D. In the case of operational spectrographs, such data can be further processed by the instrument pipeline creating all of the products that would be produced for real data. This enables observers to project existing spectra or theoretical model spectra of their proposed target onto the resolution, sensitivity and format of a given instrument. For instruments in the planning phase, this approach provides a highly accurate method for visualising the capabilities of the proposed instrument under a wide range of possible operating conditions - such as alignment errors, setting angles of gratings, miss-rotation of detector grids to name a few. Mitigation strategies and operational concepts can thus be integrated into the design at a very early stage.

Paper Details

Date Published: 9 July 2008
PDF: 9 pages
Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 70171Q (9 July 2008); doi: 10.1117/12.789046
Show Author Affiliations
Paul Bristow, ESO (Germany)
Florian Kerber, ESO (Germany)
Michael R. Rosa, ESA (Germany)

Published in SPIE Proceedings Vol. 7017:
Modeling, Systems Engineering, and Project Management for Astronomy III
George Z. Angeli; Martin J. Cullum, Editor(s)

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