The Design
and Development of NIRSPEC: A Near-Infrared Echelle Spectrograph for the
Keck II Telescope
by Ian S. McLean et al. SPIE vol. 3354 pp. 566-578
Abstract
The design and development of NIRSPEC, a near-infrared echelle spectrograph for the Keck II 10-meter telescope is described. This instrument is a large, facility-class vacuum-cryogenic spectrometer with a resolving power of R = 25,000 for a 0.4" slit. It employs diamond-machined metal optics and state-of-the-art infrared array detectors for high throughput, together with powerful user-friendly software for ease of use.
1. Introduction
Additional Reference
I. McLean, E. Becklin, D. Figer, S. Larson, T. Liu, and J. Graham,
"NIRSPEC: A near infrared cross-dispersed echelle spectrograph for the
Keck II telescope," SPIE 2475, 1995
Filters
| Name | Wavelength Range (in microns) |
| Nirspec-1 | 0.947-1.121 |
| Nirspec-2 | 1.089-1.293 |
| Nirspec-3 | 1.143-1.375 |
| Nirspec-4 | 1.241-1.593 |
| Nirspec-5 | 1.143-1.808 |
| Nirspec-6 | 1.558-2.315 |
| Nirspec-7 | 1.839-2.630 |
| Br-Gamma | 2.155-2.175 |
| CO | 2.228-2.305 |
| K | 1.996-2.382 |
| K-Prime | 1.950-2.295 |
| L-Prime | 3.420-4.120 |
| M-Prime | 4.570-4.810 |
| KL | 2.134-4.228 |
| HeI | 1.078-1.088 |
| Pa-Beta | 1.276-1.289 |
| H2 | 2.110-2.129 |
| FeII | 1.639-1.654 |
| M-Wide | 4.420-5.530 |
Slits