SpeX: a medium-resolution IR spectrograph for IRTF

John T. Rayner; Douglas W. Toomey; Peter M. Onaka; Anthony J. Denault; Werner E. Stahlberger; Darryl Y. Watanabe; Shu-i Wang

doi:10.1117/12.317273

21 August 1998 SpeX: a medium-resolution IR spectrograph for IRTF

John T. Rayner, Douglas W. Toomey, Peter M. Onaka, Anthony J. Denault, Werner E. Stahlberger, Darryl Y. Watanabe, Shu-i Wang

Author Affiliations +

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317273
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

SpeX is a medium-resolution 0.8-5.5 micrometers cryogenic spectrograph being built at the Institute for Astronomy, University of Hawaii, for the NASA IR Telescope Facility on Mauna Kea. SpeX was funded by the National Science Foundation in July 1994. First-light is expected in 1999. The primary scientific driver of the instrument is to provide maximum simultaneous wavelength coverage at a spectral resolving power which is well-matched to many planetary, stellar and galactic features, and which adequately separates sky emission lines and disperses sky spectral resolutions of R approximately 1000-2000 simultaneously across 0.9-2.5 micrometers , 2.0-4.2 micrometers , or 2.4- 5.5 micrometers . SpeX will use an Aladdin II 1024 X 1024 InSb array in its spectrograph and an Aladdin II 512 X 512 InSb array in its IR slit-viewer.

Citation Download Citation

John T. Rayner, Douglas W. Toomey, Peter M. Onaka, Anthony J. Denault, Werner E. Stahlberger, Darryl Y. Watanabe, and Shu-i Wang "SpeX: a medium-resolution IR spectrograph for IRTF", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317273

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