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Proceedings Paper

A method to subtract the skylight for the multi-fiber instrument E-ELT/OPTIMOS-EVE
Author(s): M. Rodrigues; H. Flores; M. Puech; Y. Yang; F. Royer
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Paper Abstract

We present a new method to subtract sky light from faint object observations with fiber-fed spectrographs. The algorithm has been developed in the framework of the phase A of OPTIMOS-EVE, an optical-to-IR multi-object spectrograph for the future european extremely large telescope (E-ELT). The new technique overcomes the apparent limitation of fiber-fed instrument to recover with high accuracy the sky contribution. The algorithm is based on the reconstruction of the spatial fluctuations of the sky background (both continuum and emission) and allows us to subtract the sky background contribution in an FoV of 7 × 7 arcmin2 with an accuracy of 1% in the mono-fibers mode, and 0.3-0.4% for integral-field-unit observations.

Paper Details

Date Published: 21 July 2010
PDF: 8 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77356L (21 July 2010); doi: 10.1117/12.856956
Show Author Affiliations
M. Rodrigues, GEPI, Observatoire de Paris-Meudon, CNRS (France)
CENTRA, Instituto Superior Tecnico (Portugal)
H. Flores, GEPI, Observatoire de Paris-Meudon, CNRS (France)
M. Puech, GEPI, Observatoire de Paris-Meudon, CNRS (France)
Y. Yang, National Astronomical Observatories (China)
F. Royer, GEPI, Observatoire de Paris-Meudon, CNRS (France)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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