Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...235..532b&link_type=abstract
Astronomy and Astrophysics, Vol. 235, NO. AUG(II), P. 532, 1990
Astronomy and Astrophysics
Astrophysics
1
Instruments, Spectroscopy, Image Processing, Data Analysis, Radial Velocities
Scientific paper
The development of a computerized reduction technique applicable to moderate spectral resolution, long slit spectrography has been presented in Paper I. The resulting programmes are chained in an interactive or automatic procedure run on a VAX 780 computer in the context of MIDAS environment. This software corrects automatically for the strong transverse and longitudinal distortions normally induced by image-tubes or electronographic cameras. The reduction of a sample of 7 spectra obtained with the ESO 1.52 m telescope equipped with the Boller and Chivens spectrograph plus image-tube illustrates the technique we have developed. The wavelength calibration procedure can achieve an accuracy of 0.04 Å with an original reciprocal dispersion around 40 Å mm-1.
Burgarella Denis
Martinis John
Viton Maurice
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