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  • The DES Project
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TheDESurvey @TheDESurvey
Dark Energy Survey  @TheDESurvey
Sep 29
Want to know what it was like for our DEScientists to fly in from around the globe to take observations… https://t.co/Hu9cNKZDuG
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Dark Energy Survey  @TheDESurvey
Sep 23
RT @NOIRLabAstro:Happy Equinox! In Chile we are celebrating the start of Spring with images of the road to @CerroTololo where añañuc… https://t.co/umtICgJhoC
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Dark Energy Survey  @TheDESurvey
Sep 16
RT @wolteriquelme:New paper on arXiv today ( https://t.co/pMMbtAzgvK) with @ColmoCosmos, Juan GB, @annamporredon and more! We present… https://t.co/R9gNLcMVe7
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Dark Energy Survey  @TheDESurvey
Sep 14
RT @NOIRLabAstro:In this episode of #Cosmoview, we are celebrating 10 years of discovery with the 570-megapixel @DOEScience Dark Ene… https://t.co/vztzWdGEBb
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Dark Energy Survey  @TheDESurvey
Sep 13
RT @NOIRLabAstro:@martini_paul (@OhioState) described a "tale of two telescopes", with our Blanco @cerrotololo running @theDESurvey… https://t.co/wzhHneHnPi
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The Dark Energy Survey
2 days ago
The Dark Energy Survey

Want to know what it was like for our DEScientists to fly in from around the globe to take observations at Cerro Tololo in Chile? Check out this wonderful compilation of a night working on DES by Agnès Ferté!

www.youtube.com/watch?v=b5N0Bq2NI8w

(Video in French with English and Spanish subtitles available) ... See MoreSee Less

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The Dark Energy Survey
1 week ago
The Dark Energy Survey

Fotos de la biografíaHappy Equinox! At our observatory site in Chile we are celebrating this change of season with images of the road to Cerro Tololo where we are beginning to see some añañucas, a beautiful red flowers typical of northern Chile, blending with the landscape of telescopes and the mountains.
Credit: NOIRLab/NSF/AURA/F. Bruno

#flowers #equinox #mountain ... See MoreSee Less

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The Dark Energy Survey
2 weeks ago
The Dark Energy Survey

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The Dark Energy Survey
3 weeks ago
The Dark Energy Survey

Big milestone for DECam!📷🌌We are celebrating the 10 years of discovery of the 570-megapixel U.S. Department of Energy fabricated Dark Energy Camera at NOIRLab’s Cerro Tololo Inter-American Observatory (CTIO) in Chile with the release of a stunning image of the Lobster Nebula! It is a brilliant star-forming region located 8000 light-years from Earth in the direction of the constellation Scorpius. This image reveals bright, young stars surrounded by billowing clouds of dust and gas.

DECam has just passed the remarkable milestone of taking one million individual exposures, delivering on average 400 to 500 images per night 🤩. The image was unveiled at the DECam at 10 years: Looking Back, Looking Forward conference, which highlighted the outstanding DECam science results of the past 10 years and the exciting opportunities with DECam as astronomy looks to the future with Rubin Observatory, currently under construction on Cerro Pachón in Chile.

Read more: noirlab.edu/public/news/noirlab2221/
Credit: CTIO/NOIRLab/DOE/NSF/AURA
T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), J. Miller (Gemini Observatory/NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab)
#astronomy #science #telescope #nebula #space #DECam10years ... See MoreSee Less

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Woohoo!!!! Congratulations!!

Shouldn't that be discovery BY, not OF? Reads as if the camera was discovered 10 years ago! But grear work anyway. 👍

The Dark Energy Survey
3 weeks ago
The Dark Energy Survey

Fotos de la biografíaDynastic Vibes ✨

The SMARTS 0.9-meter Telescope at Cerro Tololo Inter-American Observatory (CTIO), a Program of NOIRLab has been used to capture an echo of the past in this gorgeous Image of the Week. RCW 86 is a literal shell of its former self, the gaseous remnant of a supernova. Some 11,000 years ago a white dwarf, itself the core of a former star, became too massive and spectacularly exploded in a Type Ia supernova. Besides being a spectacular stellar object, the remnant may have been created by the earliest recorded supernova, observed by Chinese astronomers in 185 AD in the same area between the constellations Circinus and Centaurus.

Credit: CTIO/NOIRLab/NSF/AURA/T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab)
Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)

noirlab.edu/public/images/iotw2236a/
#astronomy #space #telescope #imageoftheweek #supernova ... See MoreSee Less

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News

Scientists Leverage HPC and AI to Wrangle the ‘Galaxy Zoo’

July 8, 2019 12:00 pm

The research team developed a new approach to classifying these hundreds of millions of galaxies. Instead of relying on crowdsourced classification, the researchers used knowledge from the state-of-the-art Xception neural network, combined with the datasets generated by the Galaxy Zoo project, to train its deep learning models. They then applied the trained model to galactic images from the Dark Energy Survey (DES) – where it achieved a 99.6% accuracy in identifying spiral and elliptical galaxies.

Three sky surveys completed in preparation for Dark Energy Spectroscopic Instrument

July 8, 2019 12:00 pm

It took three sky surveys — conducted at telescopes in two continents, covering one-third of the visible sky, and requiring almost 1,000 observing nights – to prepare for a new project that will create the largest 3-D map of the universe’s galaxies and glean new insights about the universe’s accelerating expansion. This Dark Energy Spectroscopic Instrument (DESI) project will explore this expansion, driven by a mysterious property known as dark energy, in great detail. It could also make unexpected discoveries during its five-year mission.

Multiple Measurements close in on Dark Energy

May 6, 2019 12:00 pm

An extensive analysis of four different phenomena within the universe points the way to understanding the nature of dark energy, a collaboration between more than 100 scientists reveals. Dark energy – the force that propels the acceleration of the expanding universe – is a mysterious thing. It’s nature, write telescope scientist Timothy Abbott from the Cerro Tololo Inter-American Observatory, in Chile, and colleagues, “is unknown, and understanding its properties and origin is one of the principal challenges in modern physics”. Indeed, there is a lot at stake. Current measurements indicate that dark energy can be smoothly incorporated into the theory of general relativity as a cosmological constant; but, the researchers note, those measurements are far from precise and incorporate a wide range of potential variations.

Viewpoint: Dark Energy Faces Multiple Probes

May 1, 2019 12:00 pm

One of the top goals in cosmology today is understanding the dark energy that is responsible for the accelerated expansion of the Universe. Is the dark energy consistent with the cosmological constant of general relativity—representing a constant energy density filling space homogenously? Or can we find deviations from general relativity on cosmological scales that suggest a more complex nature for gravity? Questions like these motivate the current and next generations of surveys that aim to map out ever larger volumes of the Universe, using a wide variety of probes to constrain the properties of dark energy. The Dark Energy Survey (DES) has now derived such constraints from the combined analysis of four canonical observables related to dark energy: supernovae, baryon acoustic oscillations, gravitational lensing, and galaxy clustering [1]. The resulting bounds confirm what we knew from previous studies, which focused on single probes. But the results indicate that this multiprobe approach could allow surveys in the 2020s to improve such constraints by orders of magnitude, possibly bringing us close to solving the dark energy puzzle.

Supernovae, Dark Energy, and the Fate of Our Universe

April 5, 2019 12:00 pm

What’s the eventual fate of our universe? Is spacetime destined to continue to expand forever? Will it fly apart, tearing even atoms into bits? Or will it crunch back in on itself? New results from Dark Energy Survey supernovae address these and other questions. At present, the fabric of our universe is expanding — and not only that, but the its expansion is accelerating. To explain this phenomenon, we invoke what’s known as dark energy — an unknown form of energy that exists everywhere and exerts a negative pressure, driving the expansion. Since this idea was first proposed, we’ve conducted decades of research to better understand what dark energy is, how much of it there is, and how it influences our universe.

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