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Elt

All articles tagged with #elt

space17 days ago•16 min saved

A Trio of Giants: Why We Need All Three 30-Meter Telescopes

The article argues that humanity should build and operate all three 30-meter-class ground-based telescopes—the ELT (Chile), GMT (Chile), and the northern-hemisphere TMT—because each brings unique strengths: ELT for deepest, highest-resolution views; GMT for wide-field and blue/short-wavelength work; and TMT for northern-sky access. Ground-based facilities avoid launch limits, offer repairability and upgradeability, and can have lifespans spanning the 21st century. Together they enable transformative science across stellar populations, galaxies, exoplanets, and dark matter, while covering most of the sky and complementing space telescopes. The piece urges continued funding and international cooperation to realize the trio.

via Big Think|

#astronomy #elt #gmt

science4 months ago•5 min saved

Threat to Atacama's Dark Skies as Light Pollution Spreads

The Atacama Desert, a premier astronomy hub hosting the ELT and major observatories, faces rising light pollution from mining, energy projects, and urban development. Scientists warn that even small increases in artificial light can degrade decades of data and hinder the search for Earth-like planets, spurring calls for stricter protections and regulatory updates after a near-miss green-energy project near Paranal highlighted governance gaps.

via The Daily Galaxy|

#astronomy #atacama-desert #dark-skies

space6 months ago•77 min saved

Chile’s Cerro Armazones Hosts the World’s Largest Telescope in the Making

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.

via Space|

#astronomy #cerro-armazones #elt

science1 year ago•1 min saved

Extremely Large Telescope Captures Roof Photo of the Day on August 5, 2025

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.

via Space|

#astronomy #chile #elt

astronomy2 years ago•5 min saved

"Detecting Life on Exoplanets: Spying on Atmospheric Signs"

Researchers from The Ohio State University have examined the potential of upcoming telescopes, such as the Extremely Large Telescopes (ELTs) and the James Webb Space Telescope, to detect biosignatures in the atmospheres of nearby exoplanets. Their study suggests that these advanced telescopes could significantly enhance the search for potential extraterrestrial life by closely scrutinizing the atmospheres of rocky exoplanets for chemical traces of oxygen, carbon dioxide, methane, and water, which are biosignatures also found in Earth's atmosphere. The research also evaluated the effectiveness of specialized imaging instruments and compared the capabilities of ground-based and space telescopes in detecting planetary atmospheres.

via Phys.org|

#astronomy #biosignatures #elt