Hubble Space Telescope Optical Telescope Assembly
E907164
The Hubble Space Telescope Optical Telescope Assembly is the primary optical system of the Hubble observatory, responsible for collecting and focusing light onto its scientific instruments to enable high-resolution observations of the universe.
All labels observed (5)
| Label | Occurrences |
|---|---|
| HST OTA | 1 |
| Hubble OTA | 1 |
| Hubble Space Telescope Optical Telescope Assembly canonical | 1 |
| Hubble Space Telescope optical system | 1 |
| Hubble Space Telescope optical telescope assembly | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11078680 — 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: Hubble Space Telescope Optical Telescope Assembly Context triple: [Hubble Space Telescope science instruments, uses, Hubble Space Telescope Optical Telescope Assembly]
-
A.
Hubble Space Telescope optical bench
The Hubble Space Telescope optical bench is a rigid, precisely aligned structural platform inside the telescope that supports and stabilizes its scientific instruments to ensure accurate imaging and observations.
-
B.
Hubble Space Telescope Power Control Unit
The Hubble Space Telescope Power Control Unit is a critical subsystem that distributes and regulates electrical power for all of Hubble’s instruments and systems, ensuring stable and reliable operation in orbit.
-
C.
Hubble Space Telescope computer
The Hubble Space Telescope computer is the primary onboard data-handling and control system that manages the telescope’s scientific instruments and operations in orbit.
-
D.
Hubble Space Telescope
The Hubble Space Telescope is a large, space-based observatory that has provided some of the most detailed images and data about the universe, revolutionizing modern astronomy and cosmology.
-
E.
Hubble Space Telescope equipment bay
The Hubble Space Telescope equipment bay is an internal service area of the observatory that houses key scientific instruments, support systems, and hardware needed for its space-based operations.
- 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: Hubble Space Telescope Optical Telescope Assembly Target entity description: The Hubble Space Telescope Optical Telescope Assembly is the primary optical system of the Hubble observatory, responsible for collecting and focusing light onto its scientific instruments to enable high-resolution observations of the universe.
-
A.
Hubble Space Telescope optical bench
The Hubble Space Telescope optical bench is a rigid, precisely aligned structural platform inside the telescope that supports and stabilizes its scientific instruments to ensure accurate imaging and observations.
-
B.
Hubble Space Telescope Power Control Unit
The Hubble Space Telescope Power Control Unit is a critical subsystem that distributes and regulates electrical power for all of Hubble’s instruments and systems, ensuring stable and reliable operation in orbit.
-
C.
Hubble Space Telescope computer
The Hubble Space Telescope computer is the primary onboard data-handling and control system that manages the telescope’s scientific instruments and operations in orbit.
-
D.
Hubble Space Telescope
The Hubble Space Telescope is a large, space-based observatory that has provided some of the most detailed images and data about the universe, revolutionizing modern astronomy and cosmology.
-
E.
Hubble Space Telescope equipment bay
The Hubble Space Telescope equipment bay is an internal service area of the observatory that houses key scientific instruments, support systems, and hardware needed for its space-based operations.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Ritchey–Chrétien Cassegrain telescope
ⓘ
space telescope optical system ⓘ |
| alsoKnownAs |
HST OTA
ⓘ
Hubble OTA ⓘ |
| contractedBy | NASA ⓘ |
| correctedBy |
COSTAR corrective optics
ⓘ
WFPC2 built-in corrective optics ⓘ |
| correctedDuringMission |
Servicing Mission 1 (1993)
ⓘ
linked to:
Hubble Space Telescope servicing mission 1
|
| designedBy | Perkin-Elmer Corporation ⓘ |
| designedFor |
high-resolution imaging of the universe
ⓘ
near-infrared astronomy ⓘ optical astronomy ⓘ spectroscopic observations ⓘ ultraviolet astronomy ⓘ |
| hadInitialSphericalAberration | primary mirror edge too flat by about 2 micrometres ⓘ |
| hasAlignmentTolerance | nanometre-scale mirror positioning ⓘ |
| hasApertureStop | primary mirror edge ⓘ |
| hasBaffleSystem | internal light baffles ⓘ |
| hasCentralObscuration | secondary mirror and support spiders ⓘ |
| hasDesignWavelengthRange |
near-infrared
ⓘ
ultraviolet ⓘ visible ⓘ |
| hasEffectiveFocalLength |
57.6 metres
ⓘ
5760 centimetres ⓘ |
| hasFieldOfView | about 28 arcminutes (diagonal at focal plane) ⓘ |
| hasFocalRatio | f/24 ⓘ |
| hasFunction |
collect light from astronomical sources
ⓘ
focus light onto Hubble scientific instruments ⓘ provide diffraction-limited imaging in space ⓘ |
| hasOperatingEnvironment | low Earth orbit vacuum ⓘ |
| hasOperatingTemperatureControl | thermal insulation and heaters ⓘ |
| hasPointingStabilityRequirement | 0.007 arcseconds ⓘ |
| hasPrimaryMirrorCoating | aluminium with magnesium fluoride overcoat ⓘ |
| hasPrimaryMirrorDiameter |
2.4 metres
ⓘ
94.5 inches ⓘ |
| hasPrimaryMirrorMaterial | ultra-low expansion glass ⓘ |
| hasSecondaryMirrorDiameter |
0.3 metres
ⓘ
12 inches ⓘ |
| hasStructuralMaterial | graphite-epoxy truss ⓘ |
| hasSupportStructure | metering truss ⓘ |
| hasWavefrontErrorAfterCorrection | about 10 nanometres RMS ⓘ |
| launchedWith | Hubble Space Telescope in 1990 ⓘ |
| launchVehicle |
Space Shuttle Discovery STS-31
ⓘ
linked to:
STS-31
|
| locatedIn | Hubble Space Telescope forward section ⓘ |
| manufacturedBy | Perkin-Elmer Corporation ⓘ |
| operatedBy | NASA ⓘ |
| operatedWith | Hubble Space Telescope science instruments ⓘ |
| partOf | Hubble Space Telescope ⓘ |
| usesPrimaryMirror | Hubble Space Telescope primary mirror ⓘ |
| usesSecondaryMirror | Hubble Space Telescope secondary mirror ⓘ |
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: Hubble Space Telescope Optical Telescope Assembly Description of subject: The Hubble Space Telescope Optical Telescope Assembly is the primary optical system of the Hubble observatory, responsible for collecting and focusing light onto its scientific instruments to enable high-resolution observations of the universe.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
Hubble Space Telescope science instruments
→
uses
→
Hubble Space Telescope Optical Telescope Assembly
ⓘ
linked to: Hubble Space Telescope Optical Telescope Assembly
Hubble Space Telescope equipment bay
→
connectedTo
→
Hubble Space Telescope optical telescope assembly
ⓘ
linked to: Hubble Space Telescope Optical Telescope Assembly
linked to: Hubble Space Telescope Optical Telescope Assembly
linked to: Hubble Space Telescope Optical Telescope Assembly