EUROPEAN SOUTHERN OBSERVATORY
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EUROPEAN SOUTHERN OBSERVATORY
La Silla - Science Operation Department |
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Correcting the
chromatic and airmass dependent extinction for TIMMI2 spectra
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These illustrations show the success of the airmass correction. Standard stars obtained in December 2002 are cross-correlated, while a star at airmass AM = 1.0 serves as calibrator and targets up to AM = 2.0 are used. The final, flux calibrated target spectrum is shown both without airmass correction (green) and corrected (white). A literature profile is overplotted (red). The quality of this airmass correction may be even further improved, when we can also apply correction factors for the N-band filters not yet characterised in Sect. 3. |
| Last revision: 2004-Feb-09 by Oliver
Schütz
Contact: schuetz @ mpia.de and ls-infrared @ eso.org |
[ ESO | LaSilla | SciOp ] |
