VarAstro a new online tool for pro-am collaboration and open-science in variable stars and exoplanet research.

VarAstro is a new incarnation of the online services provided by the Czech Astronomical Society's Variable Stars and Exoplanet Section (VSES). Internationally recognized services such as the Exoplanet Transit Database and the O–C Gateway are well known among researchers in the fields of variable stars and exoplanetary science.

These services, which until now have existed separately, are now available under the umbrella project VarAstro. This integration enhances interoperability, communication, and collaboration within the field, enabling even the smallest communities to participate and be represented.

We will present the current status of the project and demonstrate its main functionalities through several associated research projects of varying scales that are already benefiting from VarAstro’s capabilities. We will also discuss the inherently open nature of this service, its alignment with the FAIR principles of Open Science, and its significant role in scientific data archiving and preservation.