GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph)
E397222
GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph) is a high-resolution fiber-fed spectrograph system that links the Gemini North telescope to the ESPaDOnS instrument at CFHT, enabling precise optical spectroscopy using Gemini’s large-aperture capabilities.
All labels observed (2)
| Label | Occurrences |
|---|---|
| GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph) canonical | 1 |
| Gemini Remote Access to CFHT ESPaDOnS Spectrograph | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3906927 — 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: GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph) Context triple: [Gemini North Observatory, hasInstrument, GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph)]
-
A.
GeMS (Gemini Multi-conjugate adaptive optics System)
GeMS (Gemini Multi-conjugate adaptive optics System) is an advanced adaptive optics facility that uses multiple laser guide stars and deformable mirrors to deliver wide-field, near-diffraction-limited imaging from the ground-based Gemini South telescope.
-
B.
GMOS-S (Gemini Multi-Object Spectrograph South)
GMOS-S (Gemini Multi-Object Spectrograph South) is a versatile optical spectrograph and imager designed for multi-object and long-slit spectroscopy on the Gemini South telescope, enabling detailed studies of faint and distant astronomical sources.
-
C.
GSAOI (Gemini South Adaptive Optics Imager)
GSAOI (Gemini South Adaptive Optics Imager) is a high-resolution near-infrared camera designed to work with adaptive optics on the Gemini South telescope, enabling extremely sharp imaging by correcting for atmospheric distortion.
-
D.
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.
-
E.
HARPS spectrograph
The HARPS spectrograph is a high-precision, fiber-fed echelle spectrograph designed primarily for detecting exoplanets via radial velocity measurements.
- 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: GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph) Target entity description: GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph) is a high-resolution fiber-fed spectrograph system that links the Gemini North telescope to the ESPaDOnS instrument at CFHT, enabling precise optical spectroscopy using Gemini’s large-aperture capabilities.
-
A.
GeMS (Gemini Multi-conjugate adaptive optics System)
GeMS (Gemini Multi-conjugate adaptive optics System) is an advanced adaptive optics facility that uses multiple laser guide stars and deformable mirrors to deliver wide-field, near-diffraction-limited imaging from the ground-based Gemini South telescope.
-
B.
GMOS-S (Gemini Multi-Object Spectrograph South)
GMOS-S (Gemini Multi-Object Spectrograph South) is a versatile optical spectrograph and imager designed for multi-object and long-slit spectroscopy on the Gemini South telescope, enabling detailed studies of faint and distant astronomical sources.
-
C.
GSAOI (Gemini South Adaptive Optics Imager)
GSAOI (Gemini South Adaptive Optics Imager) is a high-resolution near-infrared camera designed to work with adaptive optics on the Gemini South telescope, enabling extremely sharp imaging by correcting for atmospheric distortion.
-
D.
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.
-
E.
HARPS spectrograph
The HARPS spectrograph is a high-precision, fiber-fed echelle spectrograph designed primarily for detecting exoplanets via radial velocity measurements.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical instrument interface
ⓘ
fiber-fed spectrograph system ⓘ |
| abbreviation | GRACES ⓘ |
| associatedWith |
Centre National de la Recherche Scientifique
ⓘ
surface form:
CNRS / INSU (France)
Gemini Observatory ⓘ
surface form:
International Gemini Observatory
National Research Council Canada ⓘ University of Hawaiʻi system ⓘ
surface form:
University of Hawaii (site host)
|
| benefit | combines large aperture of Gemini with high-resolution capability of ESPaDOnS ⓘ |
| collaborationBetween |
Canada–France–Hawaii Telescope
ⓘ
surface form:
Canada-France-Hawaii Telescope
Gemini Observatory ⓘ |
| connectsObservatory |
Canada–France–Hawaii Telescope
ⓘ
surface form:
Canada-France-Hawaii Telescope
|
| connectsTelescope |
Gemini North Observatory
ⓘ
surface form:
Gemini North telescope
|
| dataProduct | high-resolution optical spectra ⓘ |
| enables |
high-resolution optical spectroscopy
ⓘ
remote use of ESPaDOnS from Gemini North ⓘ |
| feedsInstrumentThrough | long optical fiber link between Gemini North and CFHT ⓘ |
| fullName |
GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph)
self-linksurface differs
ⓘ
surface form:
Gemini Remote Access to CFHT ESPaDOnS Spectrograph
|
| fundingModel | international observatory partnership ⓘ |
| hostInstrument |
ESPaDOnS
ⓘ
surface form:
ESPaDOnS spectropolarimeter
|
| hostTelescope |
Canada–France–Hawaii Telescope
ⓘ
surface form:
CFHT 3.6 m telescope
|
| locatedAtObservatory |
Canada–France–Hawaii Telescope
ⓘ
surface form:
Canada-France-Hawaii Telescope Observatory
Gemini North Observatory ⓘ |
| locatedOn |
Mauna Kea
ⓘ
surface form:
Maunakea, Hawaii
|
| observatorySite |
Mauna Kea Observatories
ⓘ
surface form:
Maunakea Observatories
|
| observingMode |
classical observing via Gemini
ⓘ
queue-scheduled observations at Gemini North ⓘ |
| operatedBy |
Canada–France–Hawaii Telescope
ⓘ
surface form:
Canada-France-Hawaii Telescope Corporation
Gemini Observatory ⓘ |
| purpose |
to provide high-resolution spectroscopy at Gemini North using ESPaDOnS
ⓘ
to share instrumentation between Gemini and CFHT ⓘ |
| scienceCapabilities |
chemical abundance analysis
ⓘ
exoplanet radial-velocity studies ⓘ galactic archaeology ⓘ interstellar medium studies ⓘ stellar spectroscopy ⓘ |
| scienceFocus |
precision spectroscopy
ⓘ
time-domain spectroscopy ⓘ |
| spectralResolution | up to R ~ 67,500 (approximate) ⓘ |
| spectralResolutionMode |
high-resolution mode
ⓘ
medium-resolution mode ⓘ |
| spectrographType | cross-dispersed echelle spectrograph (via ESPaDOnS) ⓘ |
| telescopeApertureUsed | 8.1-meter Gemini North primary mirror ⓘ |
| usesDetector |
ESPaDOnS
ⓘ
surface form:
ESPaDOnS CCD detector
|
| usesInstrument | ESPaDOnS ⓘ |
| usesTechnology |
fiber-fed spectrograph feed
ⓘ
optical fiber link ⓘ |
| wavelengthCoverage | optical wavelengths ⓘ |
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: GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph) Description of subject: GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph) is a high-resolution fiber-fed spectrograph system that links the Gemini North telescope to the ESPaDOnS instrument at CFHT, enabling precise optical spectroscopy using Gemini’s large-aperture capabilities.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Gemini North Observatory
→
hasInstrument
→
GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph)
ⓘ
GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph)
→
fullName
→
GRACES (Gemini Remote Access to CFHT ESPaDOnS Spectrograph)
self-linksurface differs
ⓘ
subject surface form:
GRACES
this entity surface form:
Gemini Remote Access to CFHT ESPaDOnS Spectrograph