Overview of Instrument Capabilities

Instrument

Timescale/ Status

Field of view/ slit length/ pixel scale

Spectral resolution

Wavelength range (µm)

Sensitivity

InfraRed Imager and Spectrometer (IRIS) [AO feed from NFIRAOS]

First light/ Final Design

IFU 0.45x0.51”@0.004”/pix to 2.25”x4.4”@0.050”/pix

4000-8000

0.84-2.4

t_exp=900s, S/N=10 per channel, H=25.8, K=24.2

Imager 34”x34”@0.004”/pix

J, H, K+ narrow bands

t_exp=3600s, S/N=100 H=26.2, K=25.6

Wide Field Optical Spectrometer (WFOS)

First light/ Preliminary Design

25.5 (8.3x3) arcmin², >500” total slit length (~60 targets with 8” slits, 0.5" gaps), 0.05”/pixel

1500-3500 @0.75" slits

0.31-1.0 Full spectral coverage @R=1500

t_exp=5x900s, S/N=150 per element, R=3500 V=20.5

Multi-Objective Diffraction-limited High-Resolution Infrared Spectrograph (MODHIS) [AO feed from NFIRAOS]

First light/ Conceptual Design

Diffraction-limited Single-Mode Fibers, 4” diameter acquisition field of regard

100,000

0.95-2.4

30 cm/s velocity precision

Planetary System Imager (PSI)

Contrast 10^-8@2λ/d (max 10^-9)

2^nd Generation/ Concept

~1” outer working angle, ~10mas inner working angle

IFU/Imager 50-5000 (with polarimetry <100)

0.6-5.3

Fiber fed spectroscopy ~ 100,000

MICHI - Mid-IR AO Fed spectrometer imager IFU

(MIRES)

2^nd Generation/ Concept

Imager: (L&M bands) 24.4x24.4”@0.011”/pix

(N band) 28.1x28.1”@0.028”/pix

10-100

Imager & spectrometer

3.4-14 (L, M, N)

0.1mJy@8µm gives 10s in 1hr

Spectrometer: low res 28.1” length, high res 2” length

600 & 120,000

3x10^-19 W/m²@8µm gives 10s in 1hr

IFU (7.3-13.8 N only) 5x2”

1000

7.3-13.8

High-Resolution Optical Spectrometer (HROS)

2^nd Generation/ Concept

5”slit

50,000 to ≥90,000

0.31-1.1 (1.3 goal)

t_exp=6 hr, S/N=100 per channel@R=100,000, M=18.9

Multi-object near-IR spectrometer (IRMOS)

Either slit based or multi-IFU

Pre-concept

Scientific priorities being examined

>ten 3” IFUs over >5' diameter field

or

~2’ diameter field with ~50 slits

2000-10,000

0.8-2.5

t_exp=1000s, S/N=10 per element, R=3270 Y=23.4, J=23.0, H=22.7, K=21.2

Near-IR AO-fed Echelle Spectrometer (NIRES) [AO feed from NFIRAOS]

2^nd Generation/ Concept

2” slit

20000–100000

1-5

t_exp=1 hr, S/N=100 per element, R=50,000 Y=17.4, J=17.2, H=17.0, K=16.6

Astronomical Rapid Imager and Spectropolarimetric Explorer (ARISE)

2^nd Generation/ Whitepaper

Imaging 5’x5’ @0.1”/pixel
IFU @0.1”/pixel
10 Hz full frame
100 Hz windowed

Broadband to >15000

0.31-4.8