AO Focal Plane Instrumentation

The phase one instrumentation program consists of a suite of instruments which will benefit from phase one adaptive optics system, Altair. The charts below summarize the instrumentation and provide links to the instruments home pages.

Instrument	Name	Project Home Page	Local Link
Gemini Near-Infrared Imager	NIRI	NIRI builder	NIRI home page
Gemini Near-Infrared Spectrograph	GNIRS	GNIRS builder	GNIRS home page
Gemini Multi-Object Spectrograph	GMOS	GMOS builder	GMOS home page

Table 1. Gemini Phase I Instrumentation
Instruments		Wavelength Range	Array Format	Pixel Scale		FOV/Slit Length	Spectral Resolution	Other Capabilities	Upgrade Options
MAUNA KEA
Multi-Object Spectrograph (GMOS-N)		0.4 - 1.1µm	4k x 6k CCD	0.08"		5.5' x 5.5'	R~1 k (3 pix) R~3k (3 pix) R~10k (3 pix)	~200 multi slits 0.2" pix IFU	1-1.5µm 0.1" pix IFU
								Imaging
Near IR Imager (NIRI)		1 - 5.5µm	1k x 1k InSb	0.02" 0.05 0.11		20" x 20" 50" x 50" 110" x 110"	Filters to R~100	R~700 grism Polarizing prism Near IR WFS (t/t) Coronagraph
Near IR Spectrograph (NIRS)		1 - 5.5µm	1k x 1k InSb	0.05" 0.15"		50" 100"	R=2k, 6k, 18k R=0.7k, 2k, 6k.	X Dispersion Polarizing Prism Near IR WFS (t/t)	1 - 2.5µm 0.05" pix IFU R~30k
Adaptive Optics System (AOS)		1 - 2.5µm 0.8 - 5.5µm (goal)				2' dia		natural guide star conjugation to alt. feed all inst. ports 0.5 - 2.5µm ADC	Laser Beacon
			SR=0.4 at 1.6µm, median seeing and bright guide stars
CERRO PACHON
Multi-Object Spectrograph (GMOS-S)	0.38 - 1.1µm		4k x 6k CCD		0.08"	5.5' x 5.5'	R~ 1 k (3 pix) R~3k (3 pix) R~10k (3 pix)	~200 multi slits 0.2" pix IFU	1 - 1.5µm 0.1" pix IFU
								Imaging
High Resolution Optical Spectrometer (HROS)	0.30 - 1.1µm		4k x 4k CCD			60"	30k - 80k	Cass mounted Prism X Dispersion	R= 120k Multi object Hi Stab Lab Feed Polarizing Prism
Mid-IR Imager	8 - 25µm		~256 x 256		0.13"	40" x 40"	Filters to R~100

The First Future Gemini Instrumentation Workshop held in Abingdon, Oxfordshire resulted in a recommendation of an agressive program of future focal-plane instrumentation optimized for the adaptive optics systems. The recommended new capabilities are outlined in the workshop report RPT-PS-G0075, Future Gemini Instrumentation. The instruments which will be optimized for the AOSs are summarized in the following table.

Instrument	Name	Project Home Page	Local Link
Small Field NIR Imager / Coronagraph	????	None yet	None yet
Integral Field Units for GNIRS	????	None yet	None yet
Small Field IR MOS	????	None yet	None yet

Page compiled by Mark Chun. Last update January 18, 2000; Francois Rigaut