Telescope and instruments

Why is going to space crucial to map dark matter?

Consortium, ESA, Science, Telescope and instruments / By

A key promise of the Euclid mission is to explore the evolution of the dark Universe. The foundation of this ambitious program is a large optical and near-infrared imaging survey. Euclid’s cosmic map will depict more than one billion galaxies out to 10 billion light-years, making it the biggest and most detailed cosmological data set of our age. How does the quality of the first Euclid images compare to another reference cosmological data set, the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Survey?

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Why is going to space crucial to map dark matter?Read More »

Why is going to space crucial to map dark matter? Read More »

What’s in Euclid’s First Light images?

Consortium, ESA, Telescope and instruments / By

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.

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What’s in Euclid’s First Light images?Read More »

What’s in Euclid’s First Light images? Read More »

Sun-earth L2 point

The Euclid telescope and satellite overview

Telescope and instruments / By

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.

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The Euclid telescope and satellite overviewRead More »

The Euclid telescope and satellite overview Read More »

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