Welcome to var.astro.cz, an internet portal of Czech variable star researchers!

Variable Star and Exoplanet Section of Czech Astronomical Society was found in 1924 (as Variable Star Section of CAS). Since the time, it's an organisation coordinating research and observing of variable stars (and exoplanets in last years) in Czech republic (member of EU). Members of our Section are mostly advanced amateur and professional astronomers.

Main observing and research activities are collected in 4 projects:

  • Project B.R.N.O. - observing and research of eclipsing binaries
  • Project MEDUZA - observing and research of intrinsic variables (mostly long period red variables SR, M, RCB, ...)
  • Project TRESCA - observing and searching for new transiting exoplanets.
  • Project HERO - observing and research of high energy sources (x-ray, gamma-rays).

President of the Section: Ladislav Smelcer, e-mail: lsmelcer@seznam.cz
Address: Variable Star and Exoplanet Section of Czech Astronomical Society, Vsetínská 941/78, 757 01 Valašské Meziříčí, Czech Republic


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> Minima predictions <

> Exoplanet transits <

New minima in B.R.N.O.:

New transits in TRESCA:

New data MEDUZA:

Currently operating observers:
Observers on-line chat



(Medulka T.)

STATUS: Active21:30 - 04:00

PROGRAM: V511 Per


South-Moravian-Observatory
(Auer, R. F.)

STATUS: Active20:30 - 02:00

PROGRAM: V1949 Cyg