About

Jan Ebr is a prominent astrophysicist whose research lies at the intersection of atmospheric science and high-energy astrophysics, with a particular focus on developing precision instrumentation for major gamma-ray and cosmic-ray observatories. He is best known as a driving force behind the FRAM (F/(Ph)otometric Robotic Atmospheric Monitor) telescope system, an innovative robotic instrument designed to measure vertical aerosol optical depth with remarkable precision using stellar photometry. Originally deployed at the Pierre Auger Observatory in Argentina, FRAM technology has since been adapted for the next-generation Cherenkov Telescope Array (CTA), where accurate atmospheric characterization is critical to achieving reliable gamma-ray energy measurements. Ebr's methodological contributions include pioneering a wide-field photometry approach to aerosol measurement that dramatically improved monitoring efficiency and spatial resolution. His 2010 foundational FRAM paper has accumulated 21 citations, while subsequent work across multiple major collaborations continues to shape best practices in observatory site characterization. A notable departure from his atmospheric focus, his 2023 paper on an exceptionally bright gamma-ray burst demonstrates his broader engagement with transient astrophysical phenomena. Across more than a decade of publications, Ebr has established himself as an indispensable figure in building the observational infrastructure that underpins modern very high energy astrophysics.

Research Focus

Key Achievements

6
H-Index
11
Papers
98
Total Citations
9
Avg Citations/Paper
🏆 Most Cited Paper
FRAM—The Robotic Telescope for the Monitoring of the Wavelength Dependence of the Extinction: Description of Hardware, Data Analysis, and Results
21 citations · 2010
📈 Most Prolific Year: 2019 (4 Papers)
🤝 Key Collaborators: 57
🏛 Institutions: Czech Academy of Sciences, FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic, Authorised Association Consortium

Top Papers

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    FRAM for CTA
    3 citations · 2015
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Key Collaborators

Contact & Links

Available for collaboration
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