SciOp

EUROPEAN SOUTHERN OBSERVATORY

SciOp

La Silla - Science Operation Department

Correcting the chromatic and airmass dependent extinction for TIMMI2 spectra 

Conversion factors as a function of airmass are displayed for the passbands N1 (Fig. 1a), N8.9 (Fig. 1b), N10.4 (Fig. 1c) and N11.9 (Fig. 1d). White squares are standard star measurements obtained since the TIMMI2 upgrade in October 2002, yellow crosses symbolise data taken before this time. The red line represents the fits from which Eq. (1) in Sect. 3.1 is obtained.
 
  • Fig. 1a:

  • Fig. 1b:

  • Fig. 1c:

  • Fig. 1d:

 
 
Last revision:   2004-Feb-09 by Oliver Schütz
Contact:   schuetz @ mpia.de  and  ls-infrared @ eso.org		 [ ESO | LaSilla | SciOp ]