10. 8. 2011 (TRESCA) New observing campaign: Search for HD 156846b transit...

 8. 8. 2011 (B.R.N.O.) Minima predictions of eclipsing binaries have been expanded with information on the minimum duration After man...

 8. 8. 2011 (B.R.N.O.) The depth of secondary minima of eclipsing binaries In collaboration with Anton Paschke (administrator of O-C ...

 3. 8. 2011 (TRESCA) Kepler candidate KOI-0196 b has been confirmed by A. Santerne at al. (2011), ...

 30. 7. 2011 (TRESCA) Kepler candidate KOI 203 b was renamed to Kepler-17 b (Cyg) according to discovery paper by J.M. Désert et al, 20...



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


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> Minima predictions <

> Transits predictions <

New minimas B.R.N.O.:

V 368 Sge (F. Marchi)
V1001 Cas (L. Brát)
V1001 Cas (L. Brát)
V 2477 Cyg (J. Starzomski)
V 579 Lyr (J. Starzomski)
YY CrB (P. Cagaš)
GSC 4487-0399 Cep (M. Lehky)
GSC 4487-0399 Cep (M. Lehky)
GSC 4487-0399 Cep (M. Lehky)
G4487.0347 Cep (H. Kučáková)

New transits TRESCA:

HD189733 b (S. Shadick)
HAT-P-11 b (S. Shadick)
Kepler-6 b (K. Hose)
HAT-P-5 b (S. Shadick)
KOI 0196 b (J. Garlitz)
HAT-P-23 b (J. Garlitz)
HAT-P-32 b (M. Hui)
WASP-48 b (F. Centenera)
WASP-45 b (P. Evans)
Kepler-17 b (R. Naves)

Currently operating observers:
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