Palomar Testbed Interferometer
E514338
The Palomar Testbed Interferometer is an astronomical interferometer designed to combine light from multiple small telescopes to achieve extremely high angular resolution for precision measurements of stars and other celestial objects.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Palomar Testbed Interferometer canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5363146 — 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: Palomar Testbed Interferometer Context triple: [Palomar Observatory, hasTelescope, Palomar Testbed Interferometer]
-
A.
Narrabri Stellar Intensity Interferometer
The Narrabri Stellar Intensity Interferometer was a pioneering astronomical instrument in Australia that used intensity interferometry to measure the angular diameters of hot stars with unprecedented precision.
-
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.
Navy Precision Optical Interferometer (partnership)
The Navy Precision Optical Interferometer is a high-resolution astronomical observatory operated as a partnership between Lowell Observatory, the U.S. Naval Observatory, and the U.S. Naval Research Laboratory to conduct precise optical interferometry of stars and other celestial objects.
-
D.
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.
-
E.
SMARTS 1.0m Telescope
The SMARTS 1.0m Telescope is a one-meter-class optical telescope operated as part of the SMARTS consortium’s observing facilities at the Cerro Tololo Inter-American Observatory in Chile.
- 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: Palomar Testbed Interferometer Target entity description: The Palomar Testbed Interferometer is an astronomical interferometer designed to combine light from multiple small telescopes to achieve extremely high angular resolution for precision measurements of stars and other celestial objects.
-
A.
Narrabri Stellar Intensity Interferometer
The Narrabri Stellar Intensity Interferometer was a pioneering astronomical instrument in Australia that used intensity interferometry to measure the angular diameters of hot stars with unprecedented precision.
-
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.
Navy Precision Optical Interferometer (partnership)
The Navy Precision Optical Interferometer is a high-resolution astronomical observatory operated as a partnership between Lowell Observatory, the U.S. Naval Observatory, and the U.S. Naval Research Laboratory to conduct precise optical interferometry of stars and other celestial objects.
-
D.
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.
-
E.
SMARTS 1.0m Telescope
The SMARTS 1.0m Telescope is a one-meter-class optical telescope operated as part of the SMARTS consortium’s observing facilities at the Cerro Tololo Inter-American Observatory in Chile.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical interferometer
ⓘ
optical interferometer ⓘ stellar interferometer ⓘ |
| affiliation |
Caltech
NERFINISHED
ⓘ
NASA NERFINISHED ⓘ |
| angularResolution | sub-milliarcsecond ⓘ |
| commissioned | 1995 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| decommissioned | early 2000s ⓘ |
| designedFor |
binary star characterization
ⓘ
exoplanet-related astrometric measurements ⓘ high angular resolution observations ⓘ measurement of stellar diameters ⓘ precision astrometry ⓘ precision stellar measurements ⓘ technology development for space interferometry ⓘ |
| firstLight | mid-1990s ⓘ |
| hasBaselineLength |
110 metres
ⓘ
35 metres ⓘ 85 metres ⓘ |
| hasComponent | three 40-cm siderostats ⓘ |
| hasTechnology |
active path-length control
ⓘ
delay lines ⓘ fringe tracking ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Palomar Observatory NERFINISHED ⓘ San Diego County ⓘ
surface form:
San Diego County, California
United States of America ⓘ
surface form:
United States
|
| namedAfter | Palomar Observatory NERFINISHED ⓘ |
| numberOfTelescopes | 3 ⓘ |
| observes |
binary stars
ⓘ
nearby stellar systems ⓘ stars ⓘ |
| operatedBy |
California Institute of Technology
NERFINISHED
ⓘ
Jet Propulsion Laboratory NERFINISHED ⓘ NASA Jet Propulsion Laboratory NERFINISHED ⓘ |
| primaryMirrorDiameter | 0.4 metre ⓘ |
| shortName | PTI NERFINISHED ⓘ |
| usedFor |
calibration of interferometric techniques
ⓘ
development of instrumentation for the Space Interferometry Mission ⓘ measurement of stellar orbits in binary systems ⓘ narrow-angle astrometry ⓘ search for exoplanets via astrometric wobble ⓘ |
| uses |
aperture synthesis
ⓘ
optical long-baseline interferometry ⓘ |
| wavelengthRange |
H band
ⓘ
K band ⓘ near-infrared ⓘ |
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: Palomar Testbed Interferometer Description of subject: The Palomar Testbed Interferometer is an astronomical interferometer designed to combine light from multiple small telescopes to achieve extremely high angular resolution for precision measurements of stars and other celestial objects.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.