Palomar 18-inch Schmidt Telescope
E521570
The Palomar 18-inch Schmidt Telescope is a small wide-field survey instrument at Palomar Observatory historically used for photographic sky surveys and the discovery of comets and asteroids.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Palomar 18-inch Schmidt Telescope canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5363145 — 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 18-inch Schmidt Telescope Context triple: [Palomar Observatory, hasTelescope, Palomar 18-inch Schmidt Telescope]
-
A.
Palomar 48-inch Schmidt Telescope
The Palomar 48-inch Schmidt Telescope is a wide-field survey telescope at Palomar Observatory renowned for its major contributions to sky surveys and the discovery of numerous astronomical objects.
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B.
Palomar 60-inch Telescope
The Palomar 60-inch Telescope is a 1.5-meter-class reflecting telescope at Palomar Observatory used primarily for optical imaging and time-domain astronomy.
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C.
Hale Telescope
The Hale Telescope is a historic 200-inch reflecting telescope at Palomar Observatory in California that was once the world’s largest and remains a landmark instrument in observational astronomy.
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D.
Curtis Schmidt Telescope
The Curtis Schmidt Telescope is a wide-field Schmidt telescope known for its photographic sky surveys and operation at the Cerro Tololo Inter-American Observatory in Chile.
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E.
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.
- 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 18-inch Schmidt Telescope Target entity description: The Palomar 18-inch Schmidt Telescope is a small wide-field survey instrument at Palomar Observatory historically used for photographic sky surveys and the discovery of comets and asteroids.
-
A.
Palomar 48-inch Schmidt Telescope
The Palomar 48-inch Schmidt Telescope is a wide-field survey telescope at Palomar Observatory renowned for its major contributions to sky surveys and the discovery of numerous astronomical objects.
-
B.
Palomar 60-inch Telescope
The Palomar 60-inch Telescope is a 1.5-meter-class reflecting telescope at Palomar Observatory used primarily for optical imaging and time-domain astronomy.
-
C.
Hale Telescope
The Hale Telescope is a historic 200-inch reflecting telescope at Palomar Observatory in California that was once the world’s largest and remains a landmark instrument in observational astronomy.
-
D.
Curtis Schmidt Telescope
The Curtis Schmidt Telescope is a wide-field Schmidt telescope known for its photographic sky surveys and operation at the Cerro Tololo Inter-American Observatory in Chile.
-
E.
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.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
Schmidt telescope
ⓘ
astronomical telescope ⓘ survey instrument ⓘ |
| hasAperture |
0.46-metre
ⓘ
18-inch ⓘ |
| hasFieldOfView | wide-field ⓘ |
| hasNotableFeature |
fast focal ratio
ⓘ
large photographic plate coverage ⓘ optimized for wide-field imaging ⓘ |
| hasOpticalDesign |
Schmidt camera
ⓘ
linked to:
Schmidt telescope
|
| hasPrimaryMirrorDiameter | 18-inch ⓘ |
| hasSurveyRole | wide-area precursor to deeper surveys ⓘ |
| historicalUse | survey photography on glass plates ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Palomar Mountain ⓘ Palomar Observatory ⓘ San Diego County ⓘ United States ⓘ
linked to:
United States of America
|
| mountType | equatorial mount ⓘ |
| observatoryCode | Palomar Observatory ⓘ |
| operatedBy |
California Institute of Technology
ⓘ
Palomar Observatory ⓘ |
| partOf |
Palomar Observatory survey program
ⓘ
linked to:
Palomar Observatory Sky Survey
|
| telescopeType | reflecting telescope ⓘ |
| usedFor |
discovery of asteroids
ⓘ
discovery of comets ⓘ minor planet searches ⓘ near-Earth object searches ⓘ photographic sky surveys ⓘ sky surveys ⓘ |
| usedIn |
asteroid discovery programs
ⓘ
comet discovery programs ⓘ minor planet surveys ⓘ |
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 18-inch Schmidt Telescope Description of subject: The Palomar 18-inch Schmidt Telescope is a small wide-field survey instrument at Palomar Observatory historically used for photographic sky surveys and the discovery of comets and asteroids.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.