Faint Object Spectrograph
E48388
The Faint Object Spectrograph was an early-generation Hubble Space Telescope instrument designed to obtain detailed spectra of very dim astronomical objects across a wide range of wavelengths.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Faint Object Spectrograph canonical | 14 |
| ALFOSC | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T364146 — 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: Faint Object Spectrograph Context triple: [Hubble Space Telescope, previousInstrument, Faint Object Spectrograph]
-
A.
Faint Object Camera
The Faint Object Camera was a high-resolution imaging instrument on the Hubble Space Telescope designed to observe very dim and distant astronomical objects in ultraviolet and visible light.
-
B.
Space Telescope Imaging Spectrograph
The Space Telescope Imaging Spectrograph is a versatile instrument on the Hubble Space Telescope that performs high-resolution imaging and spectroscopy across ultraviolet, visible, and near-infrared wavelengths to study the physical properties of astronomical objects.
-
C.
Cosmic Origins Spectrograph
The Cosmic Origins Spectrograph is a highly sensitive ultraviolet spectrograph on the Hubble Space Telescope designed to study the origins and evolution of galaxies, stars, and the intergalactic medium.
-
D.
Inamori Magellan Areal Camera and Spectrograph
The Inamori Magellan Areal Camera and Spectrograph (IMACS) is a wide-field optical imaging and spectrographic instrument mounted on the Magellan telescopes, used for deep astronomical surveys and detailed spectroscopic studies.
-
E.
Magellan Echellette Spectrograph (MagE)
Magellan Echellette Spectrograph (MagE) is a medium-resolution optical echellette spectrograph designed for wide wavelength coverage and efficient spectroscopy of faint astronomical sources.
- 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: Faint Object Spectrograph Target entity description: The Faint Object Spectrograph was an early-generation Hubble Space Telescope instrument designed to obtain detailed spectra of very dim astronomical objects across a wide range of wavelengths.
-
A.
Faint Object Camera
The Faint Object Camera was a high-resolution imaging instrument on the Hubble Space Telescope designed to observe very dim and distant astronomical objects in ultraviolet and visible light.
-
B.
Space Telescope Imaging Spectrograph
The Space Telescope Imaging Spectrograph is a versatile instrument on the Hubble Space Telescope that performs high-resolution imaging and spectroscopy across ultraviolet, visible, and near-infrared wavelengths to study the physical properties of astronomical objects.
-
C.
Cosmic Origins Spectrograph
The Cosmic Origins Spectrograph is a highly sensitive ultraviolet spectrograph on the Hubble Space Telescope designed to study the origins and evolution of galaxies, stars, and the intergalactic medium.
-
D.
Inamori Magellan Areal Camera and Spectrograph
The Inamori Magellan Areal Camera and Spectrograph (IMACS) is a wide-field optical imaging and spectrographic instrument mounted on the Magellan telescopes, used for deep astronomical surveys and detailed spectroscopic studies.
-
E.
Magellan Echellette Spectrograph (MagE)
Magellan Echellette Spectrograph (MagE) is a medium-resolution optical echellette spectrograph designed for wide wavelength coverage and efficient spectroscopy of faint astronomical sources.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Hubble Space Telescope instrument
ⓘ
astronomical spectrograph ⓘ space telescope spectrograph ⓘ |
| abbreviation | FOS ⓘ |
| contributedTo | early Hubble science results ⓘ |
| countryOfOperator |
United States
ⓘ
linked to:
United States of America
|
| dataProduct |
one-dimensional spectra
ⓘ
two-dimensional spectral images ⓘ |
| decommissioned | 1997 ⓘ |
| designedFor |
spectroscopy of faint astronomical objects
ⓘ
ultraviolet spectroscopy ⓘ visible-light spectroscopy ⓘ |
| era | 1990s ⓘ |
| fieldOfView | small field optimized for point sources ⓘ |
| fullName | Faint Object Spectrograph ⓘ |
| generation | first-generation Hubble instrument ⓘ |
| hasChannel |
blue channel
ⓘ
red channel ⓘ |
| hasDetector | digicon detector ⓘ |
| launchedWith | Hubble Space Telescope in 1990 ⓘ |
| launchMission | STS-31 ⓘ |
| launchVehicle | Space Shuttle Discovery ⓘ |
| locatedAt | Hubble Space Telescope axial instrument bay ⓘ |
| observatory | Hubble Space Telescope ⓘ |
| operatedOn | Hubble Space Telescope ⓘ |
| operationalEnvironment | low Earth orbit ⓘ |
| primaryScienceGoal |
interstellar medium studies
ⓘ
stellar astrophysics ⓘ study of active galactic nuclei ⓘ study of distant galaxies ⓘ study of faint quasars ⓘ |
| removedBy |
Second Hubble Space Telescope Servicing Mission
ⓘ
linked to:
STS-109
|
| removedByMission | STS-82 ⓘ |
| replacedBy | Space Telescope Imaging Spectrograph ⓘ |
| scientificDiscipline |
astrophysics
ⓘ
cosmology ⓘ extragalactic astronomy ⓘ galactic astronomy ⓘ |
| spaceAgency | NASA ⓘ |
| spectralResolution | low to medium resolution ⓘ |
| status | retired ⓘ |
| telescopeApertureUsed | 2.4-metre Hubble primary mirror ⓘ |
| usedWith |
Hubble pointing and guidance systems
ⓘ
linked to:
Hubble Space Telescope Fine Guidance Sensors
|
| wavelengthCoverage |
approximately 115 to 850 nanometres
ⓘ
near-ultraviolet to 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: Faint Object Spectrograph Description of subject: The Faint Object Spectrograph was an early-generation Hubble Space Telescope instrument designed to obtain detailed spectra of very dim astronomical objects across a wide range of wavelengths.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Corrective Optics Space Telescope Axial Replacement (COSTAR)
Hubble Space Telescope science instruments
→
firstGenerationInstruments
→
Faint Object Spectrograph
ⓘ
linked to: Faint Object Spectrograph