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IFU Spectroscopy

Top-level characteristics of NIFS

The table below gives only a quick-reference overview of the NIFS instrumental parameters. Please consult the relevant subsections for more details.

Spatial Properties
Field of View 3" × 3"
Pixel Scale 0.103" across slices
0.04" along slices
Spatial Resolution (FWHM) 0.1" full AO correction (NGS/LGS)
Seeing limited without AO
Spectral Properties
Grating Z J H K
Standard Wavelength Range (μm) 0.94 - 1.15 1.15 - 1.33 1.49 - 1.80 1.99 - 2.40
Spectral Resolution 4990 6040 5290 5290
Guiding Properties
Guide Probe PWFS2 OIWFS ALTAIR (NGS) ALTAIR (LGS)
Patrol Field 3.5 to 6.5 arcminutes 12.7" to 60" (30" max recommended with ALTAIR field lens) < 25" < 25"
Limiting Magnitude of A0 Guide Star (minimal performance) Rmag=15 Kmag=14.5 Rmag=15 Rmag=18.5