Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998stin...9927789j&link_type=abstract
Technical Report, NOAO-Preprint-792
Astronomy and Astrophysics
Astronomy
Infrared Spectroscopy, Cameras, Spectrographs, Infrared Telescopes, Infrared Astronomy, Cryogenics, Mercury Cadmium Tellurides
Scientific paper
Large astronomical spectrographs designed for use in the visible can operate efficiently well beyond the long wave-length cutoff of CCD detectors. Given the expense and complexity of constructing Infrared (IR)-optimized high resolution or multi-object spectrographs, it is prudent to explore the range of scientific programs possible utilizing modern near-infrared arrays at the focal plane of historically visible wavelength instruments. For the past three years, we have used the NICMASS camera, a 256 by 256 HgCdTe imager developed at the University of Massachusetts, at the camera 5 focus of the Coude Feed Spectrograph on Kitt Peak for moderate and high resolution infrared spectroscopy in the 1 - 1.8 micrometer range. This configuration has been used at a spectral resolution of 7200 using a 316 I/mm grating and 44000 using a 31.6 l/mm echelle grating. With the latter configuration we find the Coude Spectrograph to be an extremely stable platform permitting radial velocity determinations to better than 1 km-s(exp-1). We will discuss some scientific results obtained with this novel configuration and the performance limitations imposed by the ambient temperature spectrograph beyond a wavelength of 1 micrometer. We also discuss plans to evaluate the suitability of NICMASS for multi-object near-infrared spectroscopy on the Hydra Bench Spectrograph at the WIYN telescope on Kitt Peak.
Hinkle Kenneth H.
Joyce Richard R.
Meyer Michael R.
Skrutskie Michael F.
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