Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009pobeo..86..293r&link_type=abstract
Publications of the Astronomical Observatory of Belgrade, vol. 86, pp. 293-296
Astronomy and Astrophysics
Astronomy
Scientific paper
Testing and improving of the computer program for automatic processing (flat-fielding) of a great number of solar spectra obtained with the horizontal heliospectrograph HSFA2 has been done. This program was developed in the Astronomical Institute of Academy of Sciences of the Czech Republic in Ondřejov. An irregularity in its work has been discovered, i.e. the program didn't work for some of the spectra. To discover a cause of this error an algorithm has been developed, and a program for examination of the parallelism of reference hairs crossing the spectral slit on records of solar spectra has been made. The standard methods for data processing have been applied-calculating and analyzing higher-order moments of distribution of radiation intensity. The spectra with the disturbed parallelism of the reference hairs have been eliminated from further processing. In order to improve this algorithm of smoothing of spectra, isolation and removal of the harmonic made by a sunspot with multiple elementary transformations of ordinates (Labrouste's transformations) are planned. This project was accomplished at the first summer astronomy practice of students of the Faculty of Mathematics, University of Belgrade, Serbia in 2007 in Ondřejov.
Kotrč Pavel
Nikolic Silvana
Rackovic K.
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