Mayall 4-meter Telescope
E1033408
The Mayall 4-meter Telescope is a major ground-based optical telescope at Kitt Peak National Observatory, renowned for its wide-field astronomical surveys and contributions to observational cosmology.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mayall 4-meter Telescope canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T13292197 — 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: Mayall 4-meter Telescope Context triple: [National Optical Astronomy Observatory, operated, Mayall 4-meter Telescope]
-
A.
43 Meter Telescope
The 43 Meter Telescope is a mid-sized radio telescope at the Green Bank Observatory in West Virginia used for astronomical and atmospheric research.
-
B.
20 Meter Telescope
The 20 Meter Telescope is a mid-sized radio telescope at the Green Bank Observatory used for astronomical research and education in radio astronomy.
-
C.
Simonyi Survey Telescope
The Simonyi Survey Telescope is a wide-field optical telescope designed for rapid, repeated imaging of the night sky as part of large-scale astronomical surveys.
-
D.
Lovell Telescope
The Lovell Telescope is a large radio telescope at Jodrell Bank Observatory in England, renowned for its pioneering role in radio astronomy and space tracking since the mid-20th century.
-
E.
SMARTS 1.5-meter Telescope
The SMARTS 1.5-meter Telescope is a medium-sized optical telescope used for a wide range of astronomical research as part of the SMARTS consortium’s observing facilities.
- 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: Mayall 4-meter Telescope Target entity description: The Mayall 4-meter Telescope is a major ground-based optical telescope at Kitt Peak National Observatory, renowned for its wide-field astronomical surveys and contributions to observational cosmology.
-
A.
43 Meter Telescope
The 43 Meter Telescope is a mid-sized radio telescope at the Green Bank Observatory in West Virginia used for astronomical and atmospheric research.
-
B.
20 Meter Telescope
The 20 Meter Telescope is a mid-sized radio telescope at the Green Bank Observatory used for astronomical research and education in radio astronomy.
-
C.
Simonyi Survey Telescope
The Simonyi Survey Telescope is a wide-field optical telescope designed for rapid, repeated imaging of the night sky as part of large-scale astronomical surveys.
-
D.
Lovell Telescope
The Lovell Telescope is a large radio telescope at Jodrell Bank Observatory in England, renowned for its pioneering role in radio astronomy and space tracking since the mid-20th century.
-
E.
SMARTS 1.5-meter Telescope
The SMARTS 1.5-meter Telescope is a medium-sized optical telescope used for a wide range of astronomical research as part of the SMARTS consortium’s observing facilities.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory instrument
ⓘ
ground-based telescope ⓘ optical telescope ⓘ reflecting telescope ⓘ |
| abbreviation | DESI NERFINISHED ⓘ |
| commissioned | 1973 ⓘ |
| constructionCompleted | early 1970s ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| fieldOfView | wide-field ⓘ |
| hasApertureClass | 4-meter class telescope ⓘ |
| hasDome | yes ⓘ |
| hasInstrument | Dark Energy Spectroscopic Instrument NERFINISHED ⓘ |
| hasMirrorMaterial | glass ⓘ |
| hemisphere | Northern Hemisphere NERFINISHED ⓘ |
| installedOn | Mayall 4-meter Telescope NERFINISHED ⓘ |
| locatedIn |
Arizona
NERFINISHED
ⓘ
Kitt Peak National Observatory NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOn | Kitt Peak NERFINISHED ⓘ |
| mountType | equatorial mount ⓘ |
| namedAfter | Nicholas U. Mayall NERFINISHED ⓘ |
| namedForOccupationOfEponym | astronomer ⓘ |
| notableFor |
contributions to observational cosmology
ⓘ
large-scale galaxy surveys ⓘ wide-field spectroscopy ⓘ |
| observatoryAltitude |
approximately 2100 meters
ⓘ
approximately 6900 feet ⓘ |
| operatedBy |
NOIRLab
NERFINISHED
ⓘ
National Optical Astronomy Observatory NERFINISHED ⓘ |
| ownedBy | National Science Foundation NERFINISHED ⓘ |
| partOf | Kitt Peak National Observatory facilities NERFINISHED ⓘ |
| primaryMirrorDiameter |
158 inches
ⓘ
4 meters ⓘ |
| scienceFocus |
cosmology
ⓘ
galaxy evolution ⓘ large-scale structure of the universe ⓘ |
| telescopeType | Ritchey–Chrétien reflector NERFINISHED ⓘ |
| usedFor |
galaxy redshift surveys
ⓘ
imaging ⓘ large-scale structure studies ⓘ observational cosmology ⓘ spectroscopy ⓘ wide-field astronomical surveys ⓘ |
| usedInProject |
Baryon Oscillation Spectroscopic Survey precursor work
ⓘ
Dark Energy Spectroscopic Instrument survey NERFINISHED ⓘ |
| wavelength |
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: Mayall 4-meter Telescope Description of subject: The Mayall 4-meter Telescope is a major ground-based optical telescope at Kitt Peak National Observatory, renowned for its wide-field astronomical surveys and contributions to observational cosmology.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.