25. 9. 2011 (TRESCA) Focusing TTV diagrams in ETD. TTV plots in Exoplanet Transit Database were updated today. Simultaneously observ...

 22. 9. 2011 (B.R.N.O.) User-defined eclipsing binaries We've added a new feature on var.astro.cz. Each logged user has...

 16. 9. 2011 (TRESCA) New transiting exoplanet CoRoT-20 b (Mon) was added to ETD ...

 16. 9. 2011 (TRESCA) New transiting circumbinary exoplanet Kepler-16(AB) b was added to ETD Kepler-16A b means transits of planet ...

 13. 9. 2011 (TRESCA) New transiting super-Earth HD 97658b. A bright star (V = 7.7 mag) in Leo constellation was discovered to have a p...



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 coordining 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: Lubos Brat, e-mail: brat@pod.snezkou.cz
Address: Velka Upa 193, 542 21 Pec pod Snezkou


User not logged in
- Sign in -
New user registration (free)

> Minima predictions <

> Transits predictions <

New minimas B.R.N.O.:

HP Aur (K. Hoňková, J. Juryšek)
V365 PEG (M. Banfi)
V397 Cep (R. Kocián)
EY Vul (M. Banfi)
BX Tri (M. Banfi)
BX Tri (M. Banfi)
V959 Cyg (R. Kocián)
LZ Lyr (L. Šmelcer)
CU Tau (L. Šmelcer)
CU Tau (L. Šmelcer)

New transits TRESCA:

XO-2 b (M. Zíbar)
WASP-28 b (S. Shadick)
TrES-3 b (S. Shadick)
WASP-33 b (V. A, S. N)
HAT-P-28 b (S. Shadick)
KOI 1382 b (V. A, S. N)
HAT-P-10/WASP-11 b (Aleš)
HAT-P-10/WASP-11 b (F. e)
HAT-P-10/WASP-11 b (F. e)
WASP-33 b (R. Naves)

Currently operating observers:
Observers on-line chat


No logged observers are currently operating.