Phoenix: a cryogenic high-resolution 1- to 5-um infrared spectrograph

Details Phoenix: a cryogenic high-resolution 1- to 5-um infrared spectrograph Phoenix: a cryogenic high-resolution 1- to 5-um infrared spectrograph

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3354..810h&link_type=abstract

Proc. SPIE Vol. 3354, p. 810-821, Infrared Astronomical Instrumentation, Albert M. Fowler; Ed.

Physics

Optics

63

Scientific paper

We describe a cryogenic, high-resolution spectrograph (Phoenix) for the 1-5 micrometers region. Phoenix is an echelle spectrograph of the near-Littrow over-under configuration without cross dispersion. The foreoptics include Lyot re- imaging, discrete and circular variable order sorting filters, a selection of slits, and optics for post-slit and Lyot imaging. The entire instrument is cooled to 50 K using two closed cycle coolers. The detector is a Hughes-Santa Barbara 512 X 1024 InSb array. Resolution of 65,000 has been obtained. Throughput without slit losses is 13 percent at 2.3 micrometers . Recent results are discussed. Phoenix is a facility instrument of the National Optical Astronomy Observatories and will be available at CTIO, KPNO, and Gemini.

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