All articles tagged with #extremely large telescope
The European Southern Observatory’s Extremely Large Telescope rotated its 3,500-ton structure for the first time on its Chilean mountaintop, marking a major milestone in its assembly. Weighing about 7.7 million pounds now, the ELT will grow larger as mirrors and instruments are installed later, ultimately surpassing 10 million pounds and enabling unprecedented views of the night sky.
The Atacama Desert in Chile hosts some of the world’s most powerful astronomical facilities thanks to exceptionally dark skies, but growing urban expansion, mining, wind farms, and a canceled nearby green-energy project have spotlighted how light pollution and regulations threaten these observatories and their ability to study the universe—spurring calls for stricter sky-preservation rules to safeguard projects like the ELT and the search for Earth‑like planets.
Space agency ESO released imagery of the ELT’s enormous 80-meter outer dome at Cerro Armazones in Chile. The dome will shelter a 39-meter primary mirror, protect optics from desert heat, and feature earthquake-resilient shock absorbers; the upper section will rotate to give the telescope full access to dark skies. The project is slated for completion in 2027, with first light planned for early 2029 and initial science observations in 2030.
Space.com explains that the Extremely Large Telescope (ELT) is under construction atop Cerro Armazones in Chile to become the world's largest telescope with a 39-meter primary mirror, enabling direct imaging of exoplanets and detailed studies of star and galaxy formation, while highlighting Chile's Atacama Desert as a premier site for ground-based astronomy and ESO's role alongside the VLT.
The Extremely Large Telescope (ELT), under construction in Chile's Atacama desert, is a $1.4 billion project by ESO featuring the world's largest optical telescope with a 39-meter segmented mirror, promising images 15 times sharper than Hubble, with recent progress including the raising of its roof during a traditional ceremony.
The European Southern Observatory's Extremely Large Telescope, the world's largest visible- and infrared-light telescope, has reached a milestone with the completion of its dome's steel skeleton in Chile's Atacama Desert. A new nighttime photo shows the progress with the Milky Way overhead. The telescope, expected to be operational by 2028, will feature insulated cladding and air conditioning to protect it from the harsh desert environment.
The European Southern Observatory's Extremely Large Telescope, under construction in Chile's Atacama Desert, has reached a milestone with the completion of its dome's steel skeleton. A new nighttime photo shows the telescope's progress under the Milky Way. The structure is now being outfitted with protective panels and features a concrete foundation to minimize vibrations. The telescope is expected to begin operations by 2028.
The Extremely Large Telescope (ELT) could potentially detect biosignatures in the reflected light of Proxima Centauri B, the closest exoplanet to Earth, using the High Angular Resolution Monolithic Optical and Near-infrared Integral field spectrograph (HARMONI) to capture high-resolution spectra. While the exoplanet doesn't transit its star, the study suggests that by using masks to block the central brilliance of the star, it may be possible to capture the light of the exoplanet and discover biogenic molecules, offering a new method for searching for alien life.
Proxima Centauri B, the closest exoplanet to Earth, is a potential target in the search for alien life, but traditional methods for detecting biosignatures won't work due to it not being a transiting planet. A new study suggests using the reflection of starlight off the planet's atmosphere as an alternative method. However, the current configuration of the Extremely Large Telescope's High Angular Resolution Monolithic Optical and Near-infrared Integral field spectrograph (HARMONI) is not suitable for capturing enough high-resolution data to discover biogenic molecules. The study proposes modifying the mask configuration to optimize the design for studying Proxima Centauri B's atmosphere, which could be crucial if it does harbor life.
The Extremely Large Telescope (ELT), set to be completed in 2028, will be the world's largest optical telescope, with a main mirror diameter of 39.3 meters. It will revolutionize observational astronomy by shedding light on various aspects of the universe, including the role of black holes, the effects of dark matter and dark energy, and the study of exoplanets. The ELT's enormous mirror will enable direct imaging of exoplanets and the analysis of their atmospheres, potentially revealing signs of alien life. Additionally, the telescope will provide insights into the early universe and help resolve mysteries surrounding the formation of stars and galaxies.
Astronomers from around the world are constructing the Extremely Large Telescope (ELT) in Chile, which will be the largest optical telescope ever built. With its 39-meter diameter primary mirror, the ELT will have unparalleled light-collecting power, enabling it to detect objects millions of times fainter than the human eye can see. The telescope will revolutionize our understanding of the universe by studying the first galaxies, refining our knowledge of dark matter and dark energy, and potentially finding Earth-like exoplanets in the habitable zone. The ELT will utilize spectrographs to analyze the atmospheres of exoplanets and a laser system known as a frequency comb to achieve precise measurements. Despite its construction cost of €1.45 billion, the ELT's significance in expanding our perspective beyond our Solar System justifies the investment.
The European Southern Observatory's Extremely Large Telescope (ELT) captured a stunning photo of the full Hunter's Moon rising behind it. The photo was taken on October 28 at the construction site of the ELT in Chile. The Moon appears larger due to an optical effect when it is close to the horizon. The ELT, set to be completed in 2028, will be the world's largest visible and infrared-light telescope, featuring five mirrors and weighing 6,100 tonnes.
The European Southern Observatory (ESO) celebrated the upcoming completion of the Extremely Large Telescope (ELT) by burying a time capsule at the construction site. The capsule contains mementos from ESO staff, drawings from Chilean children, and a book describing the ELT's scientific goals. The ELT, expected to be completed by 2028, will be the world's largest visible and infrared light telescope, with the ability to provide sharper images of the cosmos and aid in the search for extraterrestrial life.
A stunning image captures the rising sun behind the construction site of the Extremely Large Telescope (ELT) in Chile's Atacama Desert, showcasing the active sunspots on the sun's surface. The ELT, set to be the world's largest telescope when completed in 2028, will provide clearer views of the night sky from its location atop Cerro Armazones. With a 127-foot-diameter mirror, the ELT will enable astronomers to study Earth-like planets, dark matter, dark energy, black holes, and the earliest galaxies. The image was taken by an ESO instrumentation engineer from the peak of Cerro Paranal, where ESO's Very Large Telescope is located.
Scientists propose a new method called redshift difference to measure the expansion rate of the universe. Currently, the expansion rate, known as the Hubble parameter, can only be measured in the present. However, by observing distant galaxies that are gravitationally lensed by closer galaxies, researchers can compare the redshifts of multiple images of the same galaxy taken at different times. This method could provide insights into the evolution of cosmic expansion and help determine whether it is due to general relativity or an extension of Einstein's model. While current telescopes cannot detect the small redshift drift, future telescopes like the Extremely Large Telescope (ELT) may be able to observe this phenomenon in the coming years.