Spefo

Authors of the code is Jiri Horn; contemporary maintainer is Petr Skoda.
SPEFO is a small, yet powerful program used for processing stellar spectra at the Astronomical Institute of the Academy of Sciences of the Czech Republic in Ondrejov. It was originally written in 1990 by Dr. Jiri Horn for processing spectral plates obtained with the 2m telescope of the Ondrejov observatory and scanned at the local five channel microphotometer. Since then the code had been under constant improvement until the sudden death of the author in December 1994. In present days it is used mainly for reduction of data from Ondrejov Reticon detector (1872 pixels, 12 bit A/D), however it can accept data from other instruments too, provided that they are in FITS one-dimensional format.
The Introduction to the SPEFO.     The text is copy of the poster P. Skoda: ``SPEFO -- Simple, Yet Powerful Program for One-Dimensional Spectra Analysis''; in Astronomical Data Analysis Software and Systems V, ed. by G. H. Jacoby and J. Barnes, ASP Conference Series, Vol 101, p. 187. Created by LaTeX2html and corrected by M. Slechta


Unrectified spectrum of the star iota Her .




Rectification of the spectra  -- three zoomed figures. The yellow line denotes the normalisation curve defined by blue points (+).


Rectified spectrum of the star iota Her . The result of normalisation as it is depicted on previous figures.


Comparison of two spectra of the star iota Her .
Green line -- file IH16209.rui;
Blue line -- file HF0883.rui


Comparison of two spectra iota Her . Zoomed neighbourhood of Halfa.


Comparison of two spectra of the star iota Her . The yellow line is the difference between blue and green one.





Miroslav Slechta

Mailto: slechta@sunstel.asu.cas.cz