The Dark Energy Camera has taken countless photos. Here are 15 of the most spectacular.
The Dark Energy Camera has taken more than a million exposures of the southern sky while perched high in the Chilean Andes. Around 2.5 billion astronomical objects, including galaxies and galaxy clusters, stars, comets, asteroids, dwarf planets, and supernovae, have been captured in the images.
The remarkable 570-megapixel Dark Energy Camera, which was first created at the Fermi National Accelerator Laboratory of the U.S. Department of Energy for the Dark Energy Survey, has now been observing stars for ten years. The international DES cooperation uses deep-space data to investigate dark energy, a phenomenon that is speeding up the expansion of space.
The Dark Energy Survey, whose scientists are now analyzing data from 2013 to 2019, isn’t the only project to benefit from the powerful piece of equipment. The camera has also been utilized by other research teams to carry out additional astronomical surveys and observations. Here are just a few of the stunning images that the Dark Energy Camera captured.
The Southern Pinwheel Galaxy (also known as Messier 83 or NGC 5236) is about 15 million lightyears from Earth. It took DECam more than 11 hours of exposure time to capture this image. The camera is mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory, a program of NSF’s NOIRLab.
The Dark Energy Survey imaged one-eighth of the sky, capturing light from galaxies up to 8 billion lightyears away. The survey repeatedly imaged 10 “deep fields” like the one shown here. By returning to certain sections of the sky, scientists are able to build up and collect different wavelengths of light to image incredibly distant galaxies and faint objects. These deep fields can be used to calibrate the rest of the DES data and to hunt for supernovae.
While the Dark Energy Survey typically looks at objects millions or billions of lightyears away, sometimes closer objects come into view. In 2014, the Dark Energy Survey spotted Comet Lovejoy traveling about 51 million miles from Earth. Each rectangle in the image represents one of the 62 CCDs that DECam uses, each one a sophisticated sensor designed to capture light from distant galaxies.
The spiral galaxy NGC 1566, sometimes called the Spanish Dancer, is about 69 million lightyears from Earth. Each photo from DECam is the result of choices made during image processing. The camera uses five filters that each record a different wavelength of light (between 400 and 1,080 nanometers) and can be combined to make color images.
This DECam photo, taken looking toward the center of our Milky Way galaxy, covers an area roughly twice as wide as the full moon and contains more than 180,000 stars. You can also see a wider version encompassing more of the Milky Way’s bulge. While beautiful, the stars and dust of the Milky Way block out distant galaxies needed to study dark energy — so the Dark Energy Survey typically aims the telescope in the opposite direction, away from the plane of our galaxy.
From our position on Earth, we see the spiral galaxy NGC 681 from the side (or edge-on). The galaxy, also known as the Little Sombrero Galaxy, is about 66.5 million lightyears away. To keep images of distant objects as sharp as possible, DECam uses a mechanism called a Hexapod, which uses six pneumatically driven pistons to align the camera’s many optical elements between exposures. In addition to the five light filters, DECam also has five optical lenses, the biggest of which is more than 3 feet wide and weighs 388 pounds.
This image shows a wide-angle view of the Small Magellanic Cloud. The Large and Small Magellanic Clouds are dwarf satellite galaxies to the Milky Way, and their proximity makes them a valuable place to study star formation. The Dark Energy Camera captured deep looks at our galactic neighbors for the Survey of the Magellanic Stellar History or SMASH.
The large galaxy at the center of this image is NGC 1515, a spiral galaxy with several neighboring galaxies in the Dorado Group. When looking at the large-scale structure of the universe, astronomers find galaxies are not distributed randomly but instead cluster together, forming a sort of cosmic web. The Dark Energy Survey has made some of the most-precise maps of the universe’s structure and its evolution over time.
NGC 288 is a globular cluster of stars located about 28,700 lightyears from Earth. These stars are bound together by gravity and are concentrated toward the center of the sphere. Globular clusters are an interesting way to study how stars and our own Milky Way evolved, though the Dark Energy Survey looks at distant galaxies and galaxy clusters to better understand dark energy.
This Dark Energy Camera image shows light from Centaurus A, a galaxy more than 12 million lightyears away. It is partially obscured by dark bands of dust caused by the collision of two galaxies.
The Dark Energy Survey has found several new dwarf galaxies and used the data to limit how big potential dark matter particles could be. This irregular dwarf galaxy, IC 1613, is about 2.4 million lightyears away and contains around 100 million stars. Dwarf galaxies are considered small and faint by astronomical standards; for comparison, our Milky Way galaxy is estimated to contain between 100 and 400 billion stars.
The Helix Nebula (NGC 7293) is a planetary nebula about 650 lightyears from Earth. It is shown here extending over several of the Dark Energy Camera’s CCDs. Planetary nebulae, so named because they appeared round and sharp-edged like planets, are actually the remains of stars. Here, a dying star has ejected its outer layers, leaving a small white dwarf surrounded by gas. In billions of years, our own sun will experience a similar fate.
The spiral Sculptor Galaxy is about 11 million lightyears away. It’s one of more than 500 million galaxies imaged by the Dark Energy Survey across 5000 square degrees of sky. To optimize observations, DES used automated software to point the camera and capture exposures. The software could factor in what part of the sky was overhead, weather conditions, moonlight and which areas had been recently imaged.
The wispy shells around the elliptical galaxy NGC 474 (center) are actually hundreds of millions of stars. To the left is a spiral galaxy, and in the background, there are thousands of other, more distant galaxies — visible in this zoomable version. DECam images contain vast amounts of information; each one is about a gigabyte in size. The Dark Energy Survey would take a few hundred images per session, producing up to 2.5 terabytes of data in a single night.
The Dark Energy Camera captured the barred spiral galaxy NGC 1365 in its very first photographs in 2012. The galaxy sits in the Fornax cluster, about 60 million lightyears from Earth. This close-up comes from the camera’s much wider field of view, which you can explore in the interactive DECam viewer.
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6 Comments
Dark matter to light phenomena unearthed.
Thanks for the revelation.
The pictures are very pretty, but as we all know the Dark Energy Camera has yet to find a shred of Dark Energy. Another way to explain Dark Energy is suggested by String Theory. All matter and energy, including photons (light), have vibrating strings as their basis.
String and anti-string pairs are speculated to be created in the quantum foam, a roiling energy field suggested by quantum mechanics, and they immediately annihilate each other. If light passes near these string/anti-string annihilations, perhaps some of that annihilation energy is absorbed by the string in the light. Then the Fraunhofer lines in that light will move a bit towards the blue and away from the red shift. As this continues in an expanding universe we get the same curve displayed by Perlmutter and colleagues at their Nobel Prize lecture, without the need for Dark Energy.
This speculation has the universe behaving in a much more direct way. Specifics on this can be found by searching YouTube for “Dark Energy – a String Theory Way”
You scientists have no clue. GOD created EVERYTHING IN OUR UNIVERSE! IDIOTS!
Somebody is mad about failing high school
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Thanks for the information, Actually the Dark Energy Camera is an elite presentation, wide-field CCD imager mounted at the superb focal point of the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Between American Observatory.
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