A new generation of spectral extraction and analysis package for Fibre Optics Cassegrain Echelle Spectrograph (FOCES)

Liang Wang; Frank Grupp; Hanna Kellermann; Anna Brucalassi; Jörg Schlichter; Ulrich Hopp; Ralf Bender

doi:10.1117/12.2231393

9 August 2016 A new generation of spectral extraction and analysis package for Fiber Optics Cassegrain Echelle Spectrograph (FOCES)

Liang Wang, Frank Grupp, Hanna Kellermann, Anna Brucalassi, Jörg Schlichter, Ulrich Hopp, Ralf Bender

Author Affiliations +

Proceedings Volume 9913, Software and Cyberinfrastructure for Astronomy IV; 99133O (2016) https://doi.org/10.1117/12.2231393
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

We describe a new generation of spectral extraction and analysis software package (EDRS2) for the Fibre Optics Cassegrain Echelle Spectrograph (FOCES), which will be attached to the 2m Fraunhofer Telescope on the Wendelstein Observatory. The package is developed based on Python language and relies on a variety of third party, open source packages such as Numpy and Scipy. EDRS2 contains generalized image calibration routines including overscan correction, bias subtraction, flat fielding and background correction, and can be supplemented by user customized functions to fit other echelle spectrographs. An optimal extraction method is adopted to obtain the one dimensional spectra, and the output multi order, wavelength calibrated spectra are saved in FITS files with binary table format. We introduce the algorithm and performance of major routines in EDRS2.

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Liang Wang, Frank Grupp, Hanna Kellermann, Anna Brucalassi, Jörg Schlichter, Ulrich Hopp, and Ralf Bender "A new generation of spectral extraction and analysis package for Fiber Optics Cassegrain Echelle Spectrograph (FOCES)", Proc. SPIE 9913, Software and Cyberinfrastructure for Astronomy IV, 99133O (9 August 2016); https://doi.org/10.1117/12.2231393

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