James Clerk Maxwell Telescope
E104290
The James Clerk Maxwell Telescope is a large submillimetre-wavelength radio telescope used for astronomical observations, located near the summit of Mauna Kea in Hawaii.
All labels observed (5)
| Label | Occurrences |
|---|---|
| James Clerk Maxwell Telescope canonical | 17 |
| JCMT | 4 |
| SCUBA-2 | 3 |
| 15-metre James Clerk Maxwell Telescope | 2 |
| James Clerk Maxwell Telescope Nasmyth platform | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T796339 — 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: James Clerk Maxwell Telescope Context triple: [Mauna Kea, hasObservatory, James Clerk Maxwell Telescope]
-
A.
Subaru Telescope
The Subaru Telescope is an 8.2-meter optical-infrared reflecting telescope operated by Japan’s National Astronomical Observatory, renowned for wide-field deep-sky observations.
-
B.
Magellan Clay Telescope
The Magellan Clay Telescope is one of the twin 6.5-meter Magellan telescopes at Las Campanas Observatory in Chile, used for cutting-edge optical and infrared astronomical research.
-
C.
Gemini South Observatory
Gemini South Observatory is a major 8.1-meter optical and infrared telescope facility located on Cerro Pachón in Chile, forming the southern half of the international Gemini Observatory.
-
D.
Atacama Large Millimeter/submillimeter Array
The Atacama Large Millimeter/submillimeter Array is a powerful astronomical observatory composed of dozens of radio antennas that study the cold universe—such as star and planet formation—by observing millimeter and submillimeter wavelengths.
-
E.
Gemini North Observatory
Gemini North Observatory is a premier 8.1-meter optical/infrared telescope facility located on Maunakea in Hawaii, forming one half of the international Gemini Observatory.
- 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: James Clerk Maxwell Telescope Target entity description: The James Clerk Maxwell Telescope is a large submillimetre-wavelength radio telescope used for astronomical observations, located near the summit of Mauna Kea in Hawaii.
-
A.
Subaru Telescope
The Subaru Telescope is an 8.2-meter optical-infrared reflecting telescope operated by Japan’s National Astronomical Observatory, renowned for wide-field deep-sky observations.
-
B.
Magellan Clay Telescope
The Magellan Clay Telescope is one of the twin 6.5-meter Magellan telescopes at Las Campanas Observatory in Chile, used for cutting-edge optical and infrared astronomical research.
-
C.
Gemini South Observatory
Gemini South Observatory is a major 8.1-meter optical and infrared telescope facility located on Cerro Pachón in Chile, forming the southern half of the international Gemini Observatory.
-
D.
Atacama Large Millimeter/submillimeter Array
The Atacama Large Millimeter/submillimeter Array is a powerful astronomical observatory composed of dozens of radio antennas that study the cold universe—such as star and planet formation—by observing millimeter and submillimeter wavelengths.
-
E.
Gemini North Observatory
Gemini North Observatory is a premier 8.1-meter optical/infrared telescope facility located on Maunakea in Hawaii, forming one half of the international Gemini Observatory.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
radio telescope
ⓘ
submillimetre telescope ⓘ |
| altitude | approximately 4092 metres ⓘ |
| constructionStartDate | 1983 ⓘ |
| coordinateSystem | equatorial ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| diameterRank | one of the largest single-dish submillimetre telescopes in the world ⓘ |
| firstLightDate | 1987 ⓘ |
| formerOperator |
Joint Astronomy Centre
ⓘ
linked to:
United Kingdom Infrared Telescope
Particle Physics and Astronomy Research Council ⓘ
linked to:
Science and Technology Facilities Council
Science and Technology Facilities Council ⓘ |
| fundedBy |
Canada
ⓘ
East Asian partners ⓘ Netherlands ⓘ United Kingdom ⓘ |
| governingBody | East Asian Observatory Board ⓘ |
| hasDiscovery |
SCUBA deep submillimetre surveys of distant galaxies
ⓘ
detailed maps of star-forming regions in the Milky Way ⓘ |
| hasInstrument |
ACSIS
ⓘ
HARP ⓘ POL-2 ⓘ SCUBA ⓘ SCUBA-2 ⓘ
linked to:
James Clerk Maxwell Telescope
|
| hasMirrorMaterial | aluminium ⓘ |
| hasWebsite | https://www.eaobservatory.org/jcmt/ ⓘ |
| location |
Hawaii
ⓘ
linked to:
Hawaiʻi (island)
Mauna Kea ⓘ |
| namedAfter | James Clerk Maxwell ⓘ |
| observatorySite |
Mauna Kea Observatory
ⓘ
linked to:
Mauna Kea Observatories
|
| observesFrequencyRange | approximately 200 GHz to 900 GHz ⓘ |
| openingYear | 1987 ⓘ |
| operatedBy | East Asian Observatory ⓘ |
| partOf |
Mauna Kea Observatories complex
ⓘ
linked to:
Mauna Kea Observatories
|
| primaryMirrorDiameter | 15 metres ⓘ |
| primaryScienceField |
radio astronomy
ⓘ
submillimetre astronomy ⓘ |
| telescopeCode |
JCMT
ⓘ
linked to:
James Clerk Maxwell Telescope
|
| telescopeMount | alt-azimuth mount ⓘ |
| telescopeType | single-dish ⓘ |
| usedFor |
astronomical observations
ⓘ
cosmology ⓘ study of interstellar dust ⓘ study of molecular clouds ⓘ study of nearby galaxies ⓘ study of star formation ⓘ |
| wavelengthRange |
millimetre
ⓘ
submillimetre ⓘ |
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: James Clerk Maxwell Telescope Description of subject: The James Clerk Maxwell Telescope is a large submillimetre-wavelength radio telescope used for astronomical observations, located near the summit of Mauna Kea in Hawaii.
Referenced by (27)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope
linked to: James Clerk Maxwell Telescope