Advances in Astronomy and Space Physics, Volume 7, Issue 1-2, PP. 3-5 (2017)
doi: 10.17721/2227-1481.7.3-5

Flexible Variable Star Extractor - new software
for variable stars detection using CCD photometry

V. V. Breus

Department "Mathematics, Physics and Astronomy", Odessa National Maritime University, Mechnikova 34, Odessa 65029, Ukraine

We developed a computer program for variable stars detection using CCD photometry. It works with "varfind data" that could be exported after processing CCD frames using C-Munipack. The program chooses the comparison stars automatically, processes all time series using multiple comparison stars to get final light curves. We developed few filters and criteria that allow reducing the impact of outlying points, imaging artefacts and low quality CCD frames without careful manual time series reduction. We implemented the calculation of various variable detection indices. The pipeline has a possibility of plotting a two-channel diagram of selected pair of indices or mean brightness of the star for manual check if any outlying point is a variable candidate. The program is available at

stars: variables: general, methods: data analysis, methods: statistical