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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz

IMPACT FACTOR 2018: 0.350

CiteScore 2018: 0.24

SCImago Journal Rank (SJR) 2018: 0.202
Source Normalized Impact per Paper (SNIP) 2018: 0.144

ICV 2017: 121.03

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Volume 12, Issue 4


On the Data Reduction of WET Observations

Erika Pakštienė
  • Institute of Theoretical Physics and Astronomy, Vilnius University, Goštauto 12, Vilnius, LT-01108, Lithuania
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2017-02-08 | DOI: https://doi.org/10.1515/astro-2017-0085


It is demonstrated how the length of a continuous time-series of photometric data and their gaps affect the power spectrum of a Fourier Transform of the data. It is shown that second order effects of the atmospheric extinction - the dependence of the extinction coefficient on spectral type of a star and on the air mass - cannot be ignored. The ignoring of these effects results in aliases at frequencies lower than 200 μHz. A modification of the extinction correction procedure is proposed.

Keywords: methods; data analysis; atmospheric effects; techniques; photometric; WET


  • Clemens J. C. 1993, Baltic Astronomy, 2, 511Google Scholar

  • Nather R. E., Winget D. E., Clemens J. C., Hansen C. J., Hine B. P. 1990, ApJ, 361, 309Google Scholar

  • Pakštienė E., Solheim J.-E. 2003, Baltic Astronomy, 12, 221Google Scholar

About the article

Received: 2003-12-20

Published Online: 2017-02-08

Published in Print: 2003-12-01

Citation Information: Open Astronomy, Volume 12, Issue 4, Pages 584–588, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0085.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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