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Proceedings Paper

On-sky tests of sky-subtraction methods for fiber-fed spectrographs
Author(s): Myriam Rodrigues; M. Cirasuolo; F. Hammer; F. Royer; C. J. Evans; M. Puech; H. Flores; I. Guinouard; Gianluca Li Causi; K. Disseau; Y. Yang
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Paper Abstract

We present preliminary results on on-sky test of sky subtraction methods for fiber-fed spectrograph. Using dedicated observation with FLAMES/VLT in I-band, we have tested the accuracy of the sky subtraction for 4 sky subtraction methods: mean sky, closest sky, dual stare and cross-beam switching. The cross beam-switching and dual stare method reach accuracy and precision of the sky subtraction under 1%. In contrast to the commonly held view in the literature, this result points out that fiber-fed spectrographs are adapted for the observations of faint targets.

Paper Details

Date Published: 13 September 2012
PDF: 7 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84503H (13 September 2012); doi: 10.1117/12.924878
Show Author Affiliations
Myriam Rodrigues, European Southern Observatory (France)
M. Cirasuolo, Univ. of Edinburgh (United Kingdom)
Royal Observatory, UK Astronomy Technology Ctr. (United Kingdom)
F. Hammer, Observatoire de Paris, CNRS, Univ. Paris Diderot (France)
F. Royer, Observatoire de Paris, CNRS, Univ. Paris Diderot (France)
C. J. Evans, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
M. Puech, Observatoire de Paris, CNRS, Univ. Paris Diderot (France)
H. Flores, Observatoire de Paris, CNRS, Univ. Paris Diderot (France)
I. Guinouard, Observatoire de Paris, CNRS, Univ. Paris Diderot (France)
Gianluca Li Causi, INAF- Rome Astronomical Observatory (Italy)
K. Disseau, Observatoire de Paris, CNRS, Univ. Paris Diderot (France)
Y. Yang, Observatoire de Paris, CNRS, Univ. Paris Diderot (France)


Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)

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