IRDIS – Infra-Red Dual-beam Imager and Spectrograph

E668450

astronomical instrument near-infrared imager spectrograph

IRDIS – Infra-Red Dual-beam Imager and Spectrograph is a near-infrared imaging and spectroscopic instrument used in high-contrast exoplanet and circumstellar disk observations as part of the SPHERE facility on the Very Large Telescope.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
Infra-Red Dual-beam Imager and Spectrograph	4
IRDIS – Infra-Red Dual-beam Imager and Spectrograph canonical	1
SPHERE/IRDIS	1

How this entity was disambiguated

This entity first appeared as the object of triple T7486585 — 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: IRDIS – Infra-Red Dual-beam Imager and Spectrograph
Context triple: [SPHERE, subsystemFullName, IRDIS – Infra-Red Dual-beam Imager and Spectrograph]

A. Mid-Infrared Instrument
The Mid-Infrared Instrument (MIRI) is a key James Webb Space Telescope payload that provides imaging, spectroscopy, and coronagraphy in the mid-infrared range to study cold, distant, and dust-obscured cosmic objects.
B. Near Infrared Imager and Slitless Spectrograph
The Near Infrared Imager and Slitless Spectrograph (NIRISS) is a James Webb Space Telescope instrument designed for high-sensitivity near-infrared imaging and spectroscopy, particularly suited for exoplanet characterization and studies of distant galaxies.
C. Imaging IR Spectrometer
The Imaging IR Spectrometer is a Chandrayaan-2 orbiter instrument designed to map the Moon’s surface composition by measuring reflected and emitted infrared radiation.
D. Infrared Spectrograph
The Infrared Spectrograph is a scientific instrument designed to disperse and analyze infrared light from astronomical objects, enabling detailed studies of their composition, temperature, and physical conditions.
E. NIRI (Near-Infrared Imager and Spectrometer)
NIRI (Near-Infrared Imager and Spectrometer) is a near-infrared camera and spectrograph used on large telescopes to capture detailed images and spectra of astronomical objects at infrared wavelengths.
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: IRDIS – Infra-Red Dual-beam Imager and Spectrograph
Target entity description: IRDIS – Infra-Red Dual-beam Imager and Spectrograph is a near-infrared imaging and spectroscopic instrument used in high-contrast exoplanet and circumstellar disk observations as part of the SPHERE facility on the Very Large Telescope.

A. Mid-Infrared Instrument
The Mid-Infrared Instrument (MIRI) is a key James Webb Space Telescope payload that provides imaging, spectroscopy, and coronagraphy in the mid-infrared range to study cold, distant, and dust-obscured cosmic objects.
B. Near Infrared Imager and Slitless Spectrograph
The Near Infrared Imager and Slitless Spectrograph (NIRISS) is a James Webb Space Telescope instrument designed for high-sensitivity near-infrared imaging and spectroscopy, particularly suited for exoplanet characterization and studies of distant galaxies.
C. Imaging IR Spectrometer
The Imaging IR Spectrometer is a Chandrayaan-2 orbiter instrument designed to map the Moon’s surface composition by measuring reflected and emitted infrared radiation.
D. Infrared Spectrograph
The Infrared Spectrograph is a scientific instrument designed to disperse and analyze infrared light from astronomical objects, enabling detailed studies of their composition, temperature, and physical conditions.
E. NIRI (Near-Infrared Imager and Spectrometer)
NIRI (Near-Infrared Imager and Spectrometer) is a near-infrared camera and spectrograph used on large telescopes to capture detailed images and spectra of astronomical objects at infrared wavelengths.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	astronomical instrument ⓘ near-infrared imager ⓘ spectrograph ⓘ
acronym	IRDIS ⓘ
associatedWith	SPHERE-IFS ⓘ linked to: SPHERE SPHERE-ZIMPOL ⓘ linked to: SPHERE
commissionedAsPartOf	SPHERE commissioning on the VLT ⓘ
dataProduct	dual-band images ⓘ high-contrast images ⓘ low-resolution spectra ⓘ
fullName	Infra-Red Dual-beam Imager and Spectrograph ⓘ linked to: IRDIS – Infra-Red Dual-beam Imager and Spectrograph
hostInstrument	SPHERE ⓘ
installedOn	VLT Unit Telescope 3 Melipal ⓘ
locatedAt	Very Large Telescope ⓘ
mode	classical imaging ⓘ dual-band imaging ⓘ long-slit spectroscopy ⓘ polarimetric imaging ⓘ
observatory	Paranal Observatory ⓘ
observes	brown dwarfs ⓘ debris disks ⓘ protoplanetary disks ⓘ young giant exoplanets ⓘ
operatedBy	European Southern Observatory ⓘ
partOf	SPHERE ⓘ SPHERE high-contrast imaging facility ⓘ linked to: Spectro-Polarimetric High-contrast Exoplanet REsearch
primaryScienceCase	circumstellar disk imaging ⓘ exoplanet imaging ⓘ
scienceBand	H band ⓘ J band ⓘ K band ⓘ Y band ⓘ
scienceField	circumstellar environment studies ⓘ exoplanet science ⓘ planet formation ⓘ stellar astrophysics ⓘ
scienceGoal	characterization of exoplanet atmospheres ⓘ direct detection of exoplanets ⓘ high-contrast observations ⓘ study of circumstellar disks ⓘ
telescope	Very Large Telescope ⓘ
uses	adaptive optics from SPHERE ⓘ coronagraphs from SPHERE ⓘ
usesTechnique	differential imaging ⓘ dual-beam imaging ⓘ spectroscopy ⓘ
wavelengthRange	near-infrared ⓘ

How these facts were elicited