ESO ELT
E669647
The ESO ELT (Extremely Large Telescope) is a next-generation ground-based optical/infrared telescope being built by the European Southern Observatory, designed to be the world’s largest and most powerful telescope for astronomical observations.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ESO ELT canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7525988 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: ESO ELT Context triple: [Cerro Armazones, telescopeHost, ESO ELT]
-
A.
ESO Plus
ESO Plus is the premium subscription membership for The Elder Scrolls Online that grants access to DLC content, in-game bonuses, and a monthly allotment of Crowns.
-
B.
ESO 1.52-metre telescope
The ESO 1.52-metre telescope is a mid-sized optical telescope at the La Silla Observatory in Chile, used for a variety of astronomical observations and instrumental projects.
-
C.
ESO Directorate of Operations
The ESO Directorate of Operations is the European Southern Observatory division responsible for planning, coordinating, and overseeing the scientific and technical operations of its observatories and telescopes.
-
D.
ESO La Silla Paranal Observatory
ESO La Silla Paranal Observatory is a major European Southern Observatory facility in Chile that operates several world-class optical and infrared telescopes, including those at La Silla and Paranal.
-
E.
ESO 3.6 m Telescope
The ESO 3.6 m Telescope is a major optical telescope operated by the European Southern Observatory in Chile, known for hosting the HARPS spectrograph used in exoplanet discovery.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: ESO ELT Target entity description: The ESO ELT (Extremely Large Telescope) is a next-generation ground-based optical/infrared telescope being built by the European Southern Observatory, designed to be the world’s largest and most powerful telescope for astronomical observations.
-
A.
ESO Plus
ESO Plus is the premium subscription membership for The Elder Scrolls Online that grants access to DLC content, in-game bonuses, and a monthly allotment of Crowns.
-
B.
ESO 1.52-metre telescope
The ESO 1.52-metre telescope is a mid-sized optical telescope at the La Silla Observatory in Chile, used for a variety of astronomical observations and instrumental projects.
-
C.
ESO Directorate of Operations
The ESO Directorate of Operations is the European Southern Observatory division responsible for planning, coordinating, and overseeing the scientific and technical operations of its observatories and telescopes.
-
D.
ESO La Silla Paranal Observatory
ESO La Silla Paranal Observatory is a major European Southern Observatory facility in Chile that operates several world-class optical and infrared telescopes, including those at La Silla and Paranal.
-
E.
ESO 3.6 m Telescope
The ESO 3.6 m Telescope is a major optical telescope operated by the European Southern Observatory in Chile, known for hosting the HARPS spectrograph used in exoplanet discovery.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
ground-based telescope
ⓘ
infrared telescope ⓘ optical telescope ⓘ |
| abbreviation | ELT ⓘ |
| altitude | about 3046 metres above sea level ⓘ |
| constructionStart | 2014 ⓘ |
| constructionStatus | under construction ⓘ |
| continent | South America ⓘ |
| country | Chile ⓘ |
| designedToBe | world’s largest optical/infrared telescope ⓘ |
| firstLightPlanned | late 2020s ⓘ |
| formerName | European Extremely Large Telescope ⓘ |
| fullName |
Extremely Large Telescope
ⓘ
linked to:
European Extremely Large Telescope
|
| fundingBody | ESO member states ⓘ |
| governingOrganization |
European Southern Observatory Council
ⓘ
linked to:
ESO Council
|
| hasInstrument |
HARMONI
ⓘ
HIRES ⓘ MAORY ⓘ METIS ⓘ MICADO ⓘ MOSAIC ⓘ |
| hasTechnology |
adaptive optics
ⓘ
deformable mirrors ⓘ laser guide stars ⓘ |
| locatedIn |
Atacama Desert
ⓘ
Chile ⓘ |
| location | Cerro Armazones ⓘ |
| mirrorAreaComparison | collecting area larger than all existing 8–10 m class telescopes combined ⓘ |
| mirrorSegmentMaterial | glass-ceramic ⓘ |
| mountType | alt-azimuth mount ⓘ |
| numberOfPrimaryMirrorSegments | 798 ⓘ |
| operator | European Southern Observatory ⓘ |
| partOf |
ESO Paranal–Armazones Observatory complex
ⓘ
linked to:
ESO La Silla Paranal Observatory
|
| primaryMirrorDiameter | 39 metres ⓘ |
| primaryMirrorShape | segmented ⓘ |
| scienceCaseDocument |
Science with the European Extremely Large Telescope
ⓘ
linked to:
European Extremely Large Telescope
|
| scienceGoal |
characterization of exoplanet atmospheres
ⓘ
direct imaging of exoplanets ⓘ measure fundamental cosmological parameters ⓘ perform high-resolution spectroscopy ⓘ study dark matter and dark energy ⓘ study exoplanets ⓘ study first galaxies ⓘ study star and planet formation ⓘ |
| siteSelection |
Cerro Armazones selected in northern Chile
ⓘ
linked to:
Cerro Armazones
|
| telescopeDesign |
Ritchey–Chrétien
ⓘ
linked to:
Ritchey–Chrétien reflector
|
| wavelengthRange |
mid-infrared
ⓘ
near-infrared ⓘ optical ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: ESO ELT Description of subject: The ESO ELT (Extremely Large Telescope) is a next-generation ground-based optical/infrared telescope being built by the European Southern Observatory, designed to be the world’s largest and most powerful telescope for astronomical observations.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.