A high-efficiency near-infrared spectrograph for the Apache Point 3.5 m telescope

Alan Uomoto; Stephen A. Smee; Robert H. Barkhouser

doi:10.1117/12.552841

30 September 2004 A high-efficiency near-infrared spectrograph for the Apache Point 3.5 m telescope

Alan Uomoto, Stephen A. Smee, Robert H. Barkhouser

Author Affiliations +

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.552841
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

A point-source spectrograph under development for the APO 3.5 m telescope offers resolving powers (R = λ/Δλ) of 1000 and 4000 in the near-IR (0.85-2.5 μm) while using wide slits matched to the seeing disk. The use of diamond-turned aluminum and crystal optics in a straightforward optical path coupled with a Hawaii-1RG detector provides excellent end-to-end efficiency of 32%-39% (including the telescope optics). Designed primarily for follow-up studies of brown dwarf and high redshift quasar candidates identified by wide-field surveys such as SDSS and 2MASS, this instrument will afford the 3.5 m telescope superb capability for a wide variety of science programs. In this paper we present the goals and design of the spectrograph and its expected performance.

Citation Download Citation

Alan Uomoto, Stephen A. Smee, and Robert H. Barkhouser "A high-efficiency near-infrared spectrograph for the Apache Point 3.5 m telescope", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.552841

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