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department news

From my very first observation in Ondřejov—perhaps just once—to the world’s largest observatories

2026-09-042026-09-24 admin

For the seventh year in a row, the Ondřejov Observatory is hosting the international Workshop on Observational Techniques. This year, 21 students are participating; over

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hotstars news

High-resolution Near-Infrared Spectroscopy of the B[e] Supergiant LHA 115-S 18: Discovery of Hot Water Vapor Emission

2026-08-202026-09-24 admin

Astronomers have discovered hot water vapor for the first time in the vicinity of a hot B[e]-type giant star. The discovery shows that the environment

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exoplanet news platospec

Brown Dwarfs and Hot Jupiters on a Shared Path to the Stars

2026-07-172026-07-26 admin

Objects straddling the boundary between planets and stars offer new insights into how massive bodies can end up in very short orbits. In a study

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exoplanet news platospec

The Young Exoplanetary System TOI-201 — A Witness to the Turbulent Evolution of Planets

2026-07-012026-07-01 admin

The PLATOSpec spectrograph at the La Silla Observatory contributed, through its observations, to a significant discovery describing a young exoplanetary system consisting of a hot

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hotstars news

Thermal electrons in an ultra-relativistic shock shape the optical afterglow of GRB 250702F

2026-06-292026-06-29 admin

An optical outburst 10 billion light-years away provided the first direct optical confirmation of a 15-year-old theoretical prediction. The D50 robotic telescope at the Astronomical

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News

  • From my very first observation in Ondřejov—perhaps just once—to the world’s largest observatories
  • High-resolution Near-Infrared Spectroscopy of the B[e] Supergiant LHA 115-S 18: Discovery of Hot Water Vapor Emission
  • Brown Dwarfs and Hot Jupiters on a Shared Path to the Stars
  • The Young Exoplanetary System TOI-201 — A Witness to the Turbulent Evolution of Planets
  • Thermal electrons in an ultra-relativistic shock shape the optical afterglow of GRB 250702F
  • International Conference on High Energy Astrophysics IBWS 2026
  • Days of Open Doors at ASU Ondřejov 2026
  • The origin of sinusoidal brightness variations in F- to O-type stars through radial velocities
  • Chat with an astronomer 2026
  • How Modern and Antique Technologies Reveal a Dynamic Cosmos

Contact

Head: Brankica Kubátová
Deputy: Martin Jelínek
Secretary: Eva Žďárská
Phone: +420 323 620 226
E-mail: eva.zdarska @ asu.cas.cz

Address:
Fričova 298, 251 65 Ondřejov
Czech Republic

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  •    Astronomical Institute of CAS
  •    Czech Academy of Sciences

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