• What’s in Euclid’s First Light images?

    What’s in Euclid’s First Light images?

    Euclid’s “First Light” engineering images show a lot of things. There are obviously some astronomical objects, but also some stranger features that are not. The reason is that these images are “raw”, they have not been digitally treated the ways as needs to be done to create science-ready images. They contain a lot of features that are properties of the detectors used, but also unwanted internal reflections of the optics, as well as cosmic rays that hit all space telescopes. Converting these images into science-ready data is the task of the Euclid Science Ground Segment, which has developed a huge and very detailed data treatment (“data reduction”) pipeline over many years.

  • Euclid sees ‘First Light’

    Euclid sees ‘First Light’

    The Euclid satellite spacecraft is now officially an observatory: Euclid’s two instruments are seeing ‘First Light’ – recording the first engineering observations of the sky with a fully aligned and focussed telescope.

  • The Euclid Consortium Blog: going public

    The Euclid Consortium Blog: going public

    Euclid is a space mission in the making. We are the consortium of more than 2500 scientists and engineers partnering with ESA, to build the so far most powerful telescope for studying the nature of Dark Energy, Dark Matter and cosmology in general. We have been designing and constructing the two instruments on-board Euclid, are obtaining complementary ground-based data, develop the data analysis system, as well as simulate, test, iterate and improve all of the above again and again.

  • The Euclid telescope and satellite overview

    The Euclid telescope and satellite overview

    The primary aim of the Euclid mission is to stringently test our current cosmological model by precisely measuring the shapes and positions of a billion faint galaxies. This ambitious goal must be achieved within a limited budget which in turn sets strict constraints on the overall mass of the satellite and the mission duration.

  • Euclid’s scientific instruments

    Euclid’s scientific instruments

    Euclid’s core mission is to measure cosmological parameters to unprecedented accuracy with the aim to enable astronomers to decide between different cosmological models. Euclid’s data is taken by two exceptional astronomical cameras: VIS and NISP. …

  • Euclid’s core science

    Euclid’s core science

    In the first half of July we will launch a Falcon 9 rocket into far Earth orbit, carrying Euclid – a 1.4-billion-Euro precision instrument to explore the far universe. So why is the European Space Agency spending this budget on this space mission and not, say, 200 million pieces of avocado toast, for example? In fact, there are too many great answers to this question. This blog post will only focus on one: the main goal of the mission – to increase our understanding of the dark universe.

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