Performance and results with the NIRSPEC echelle spectrograph on the Keck II telescope

Ian S. McLean; James R. Graham; Eric E. Becklin; Donald Frank Figer; James E. Larkin; N. A. Levenson; Harry I. Teplitz

doi:10.1117/12.395422

16 August 2000 Performance and results with the NIRSPEC echelle spectrograph on the Keck II telescope

Ian S. McLean, James R. Graham, Eric E. Becklin, Donald Frank Figer, James E. Larkin, N. A. Levenson, Harry I. Teplitz

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395422
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

This paper describes the performance of NIRSPEC, the cryogenic cross-dispersed IR echelle spectrograph for the Keck II telescope on Mauna Kea. NIRSPEC employs a 1024 by 1024 InSb array, diamond-machined metal optics and closed- cycle refrigeration on achieve high throughput and low backgrounds. The instrument operates directly at the f/15 Nasmyth focus, but can also be used in conjunction with the Keck adaptive optics system. First Light was obtained on April 25, 1999. As expected, the performance is detector- limited at short wavelengths and background-limited at longer wavelengths. All of the design goals have been met and result illustrating the optical performance and sensitivity are reported.

Citation Download Citation

Ian S. McLean, James R. Graham, Eric E. Becklin, Donald Frank Figer, James E. Larkin, N. A. Levenson, and Harry I. Teplitz "Performance and results with the NIRSPEC echelle spectrograph on the Keck II telescope", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395422

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