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Proceedings Paper

Investigation of residual blaze functions in slit-based echelle spectrograph
Author(s): Petr Škoda; Brankica Šurlan; Sanja Tomić
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Paper Abstract

We have studied the Residual Blaze Functions (RBF) resulting from division of individual echelle orders by extracted flat-field in spectra obtained by slit-fed OES spectrograph of 2m telescope of Ondrejov observatory, Czech Republic. We have eliminated the dependence on target and observation conditions by semiautomatic fitting of global response function, thus getting the instrument-only dependent part, which may be easily incorporated into data reduction pipeline. The improvement of reliability of estimation of continuum on spectra of targets with wide and shallow lines is noticeable and the merging of all orders into the one long spectrum gives much more reliable results.

Paper Details

Date Published: 10 July 2008
PDF: 12 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70145X (10 July 2008); doi: 10.1117/12.789284
Show Author Affiliations
Petr Škoda, Astronomical Institute (Czech Republic)
Brankica Šurlan, Univ. of Belgrade (Serbia and Montenegro)
Sanja Tomić, Univ. of Belgrade (Serbia and Montenegro)

Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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