While writing about data releases: #ESAEuclid's major Data Release 1 will start with 1900 deg² of calibrated images, spectra, and catalogues in November 2026 ("DR1-Foundation"), adding higher-level #cosmology data products in mid-2027.

https://www.cosmos.esa.int/web/euclid/dr1-timeline

#ESA #Euclid #astronomy

Next week, 24 June, 12 noon CEST, new public #ESAEuclid image release. The countdown has started!

https://www.youtube.com/watch?v=2DtFRq1cgcc

#astronomy #Euclid #ESA

Euclid Update – Revised Timeline

In a post last week I hinted that I hoped soon to be able to provide an update on progress with the European Space Agency’s Euclid Mission. People within the Euclid Consortium have known for some time, but it has now been officially announced by ESA, that the timeline for the first full Data Release (DR1; originally scheduled for October 2026) has now been revised.

The plan now is for DR1 to happen in stages, with a first tranche to occur in November 2026 (precise date yet to be announced). The complete data release will take place in mid-2027 (probably in June). The sky area covered by DR1 will be about covering a large sky area of about 1900 deg².

To give a little more background, the data products from the Euclid survey are divided into three levels of data processing function:

• LE1 – the “raw” data frames, prior to calibration, generated at the Science Operations Centre from the time-ordered data and telemetry received from the spacecraft
• LE2 – the calibrated and corrected data for the two instruments (VIS and NISP) – images, spectra, catalogues of point sources, etc
• LE3 – the high-level data products (galaxy catalogues, cosmic shear maps, etc) designed for cosmological analysis

The first release will comprise LE1 and LE2 only. This will be called DR-Foundation. The LE3 data will be added next year to make the full DR1. Since LE3 is required for the cosmological analysis that is the prime motivation for the Euclid mission, it follows that there will be no official cosmology results from Euclid DR1 until mid-2027 at the earliest. Other results based on “Foundation” data may of course emerge before then.

I hope this clarifies the situation.

P.S. Irish physicists and astronomers will be particularly interested to know that the LE1 data includes information about the spacecraft and instrument pointing orientations, which is stored in the form of quaternions…

We congratulate Vasily Belokurov, Amina Helmi, and Rodrigo Ibata for receiving the

2026 Kavli Prize in Astrophysics

"for uncovering the fossil evidence of past mergers proving that the Milky Way galaxy was built through hierarchical accretion"!

All three happen to be members of our Euclid Consortium 🎉

https://www.kavliprize.org/2026-kavli-prize-laureates-announced

#Euclid #ESAEuclid #ESA #astronomy #space #MilkyWay

#ESAEuclid was designed to study 'invisible' dark energy. One of the methods is to use the effect of weak gravitational lensing to trace dark matter structures – also invisible in direct images – across cosmic time.

Ahead of its first major data release in November and first cosmology results in 2027, a first example of dark matter structure in the galaxy cluster Abell 2390, made visible with #Euclid data, has been published:

https://www.euclid-ec.org/euclid-starts-seeing-darkness/

#astronomy #ESA #space #cosmology

Data from #ESAEuclid uncovered physics deep inside red dwarf stars. Scientists found a 'brightness gap' in #stars of a globular cluster, pointing to structural instability at certain masses.

While #ESA's #Gaia mission had found this process in relatively nearby stars, scientists from @stsci.edu for the first time showed this for a very old globular cluster, observed by #Euclid.

Read the full press release here:

https://www.stsci.edu/contents/news-releases/2026/news-2026-405#section-id-2

#astronomy #space #Euclid #ESA #NASA #STScI

Would you like to be part of citizen science astronomy? We invite you to classify gravitational lens candidates in so-far unreleased #ESAEuclid data: "Space Warps – ESA Euclid DR1".

3000 volunteers have already made nearly 900,000 classifications, yet 70% of the project are still to be done.

All the background and link to the Zooniverse: https://www.zooniverse.org/projects/aprajita/space-warps-esa-euclid

#ESA #Euclid #astronomy #GravitationalLensing #science #CitizenScience.

Space Warps is back! Do you want to join forces with Euclid Consortium scientists and discover gravitational lenses that no human has ever seen before?

We’re announcing the next Space Warps Citizen Science campaign with Euclid data – now previewing images from Data Release 1. Here is how to become part of the project:

https://www.euclid-ec.org/space-warps-euclid-dr1/

#astronomy #science #GravitationalLenses #ESA #space #CitizenScience #ESAEuclid #Zooniverse

Für #Astronomie- und #Weltraum-Interessierte im Süd-Westen: kommenden Donnerstag, 23.4., spreche ich über #ESAEuclid und im Planetarium #Mannheim.

https://www.planetarium-mannheim.de/programme/vortraege/highlight-7

The four Artemis II astronauts just set a record for human distance from Earth, 400.000 km. This also explains why "service" missions to #ESAEuclid, #JWST, or #ESAGaia are unlikely (and currently impossible): their location at the Sun-Earth L2-point is ~1.5 million km from here.

#ESA #NASA #space #astronomy