[T.E. Lawrence's camera, 1910; Ashmolean Museum]

Gemini Instrumentation

Help pages are available for instruments as follows:

Gemini North - list of current and planned instruments (in alphabetical order) and table (arranged by wavelength)
Gemini South - list of current and planned instruments (in alphabetical order) and table (arranged by wavelength)
Retired instruments no longer or not available.

The expected instrument availability in the current and next semester is given in the schedules section.

A Gemini Board resolution describes the current status of the next generation "Aspen" instrument program. An overview of the previous "Abingdon" instrument program describes instrument and facility capabilities most recently or currently under development.

Gemini North - list of instruments

Altair (formerly known as GAOS; facility AO system)
GCAL (facility calibration unit)
GMOS-North (optical multi-object, long-slit and IFU spectrograph and imager)
Michelle (mid-IR imager/spectrometer)
NIFS (near-IR integral field spectrograph)
NIRI (near-IR imager with grism spectroscopy)
TEXES (high resolution mid-IR spectrograph)

Gemini North - table of instruments

Visible	Near-IR	Mid-IR	Other facilities
GMOS (multi-object, long-slit and IFU spectrograph and imager)	NIRI (imager with grism spectroscopy)	Michelle (imager/ spectrometer)	Altair (formerly known as GAOS; facility AO system)
	NIFS (integral field spectrograph)	TEXES (high resolution spectrograph)	GCAL (facility calibration unit)

Gemini South - list of instruments

Acquisition Camera (optical imaging)
bHROS (bench-mounted high-resolution optical spectrograph)
FLAMINGOS-2 (near-IR multi-object spectrograph)
GCAL (facility calibration unit)
GMOS-South (optical multi-object, long-slit and IFU spectrometer and imager)
GNIRS (near-IR spectrograph)
GSAOI (near-IR imager for use with adaptive optics)
NICI (near-IR coronagraphic imager)
Phoenix (high resolution near-IR spectrometer)
T-ReCS (formerly known as MIRI; mid-IR imager and spectrometer)

Gemini South - table of instruments

Visible	Near-IR	Mid-IR	Other facilities
GMOS (multi-object, long-slit and IFU spectrograph and imager)	Phoenix (high resolution spectrometer)	T-ReCS (formerly known as MIRI; imager and spectrometer)	GCAL (facility calibration unit)
bHROS (high-resolution spectrograph)	GNIRS (long-slit, cross-dispersed and IFU spectrograph)
Acquisition Camera (optical imaging)	NICI (coronagraphic imager)
	FLAMINGOS-2 (multi-object spectrograph)
	GSAOI (high-resolution imager for use with Multi-Conjugate Adaptive Optics)

Retired instruments

The following instruments are no longer available. Their web pages will be available indefinitely, to support data processing and analysis of distributed and archived data, but may not be updated.

NIRSPEC (near-IR spectrograph on Keck) was offered to the Gemini community for limited use during 2000-2001.
OSCIR (mid-IR imager/spectrometer) was offered as a visiting instrument, loaned by University of Florida for early science on Gemini North and, more recently, on Gemini South. It was replaced by the facility mid-IR instrument T-ReCS.
Hokupa'a-36 / QUIRC (natural guide star adaptive optics system and its near-IR camera) was offered as a visiting instrument, loaned by University of Hawaii for early science on Gemini North. It is due to be replaced by the facility AO system Altair.
Flamingos-I (near-IR imager and multi-object spectrometer) was offered as a visiting instrument, loaned by University of Florida, on Gemini South.
CIRPASS (near-IR Integral Field Unit spectrograph) was offered as a visiting instrument, loaded by University of Cambridge, during 2002-2003.
GPOL (facility polarisation modulator) was constructed UK Astronomical Technology Centre at ROE in a collaboration with the University of Hertfordshire. At present there are no plans to commission GPOL.

Last update October 16, 2005; Phil Puxley