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Proceedings Article

Design of a multi-object high-throughput low-resolution fiber spectrograph for WFMOS

[+] Author Affiliations
Stephen A. Smee, Robert H. Barkhouser, Karl Glazebrook

Johns Hopkins Univ.

Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62692I (June 30, 2006); doi:10.1117/12.672186
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From Conference Volume 6269

  • Ground-based and Airborne Instrumentation for Astronomy
  • Ian S. McLean; Masanori Iye
  • Orlando, FL | May 24, 2006

abstract

We present the preliminary optical and optomechanical design of a high throughput, fiber spectrograph for the Gemini/Subaru Wide-Field, Fiber-Fed, Multi-Object Spectrograph (WFMOS) designed with the principle goal of studying the nature of dark energy via enormous high-redshift spectroscopic surveys. Developed from an original Sloan Digital Sky Survey design this multi-object spectrograph utilizes all-refractive cameras, volume phase holographic gratings, and state-of-the-art CCD detectors to produce a peak instrument throughput of ~ 70%. The instrument produces 292 spectra simultaneously in two channels covering the bandpass 390 < λ < 1000 nm with a mean spectral resolution, λ/FWHM, of R ~ 1700. WFMOS will employ approximately ten of these fiber spectrographs on an 8 m class telescope to capture nearly 3000 spectra simultaneously. When used in a nod & shuffle mode of operation these spectrographs will facilitate spectroscopy of faint 0.5 < z < 3.5 galaxies with unprecedented efficiency.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Stephen A. Smee ; Robert H. Barkhouser and Karl Glazebrook
"Design of a multi-object high-throughput low-resolution fiber spectrograph for WFMOS", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62692I (June 30, 2006); doi:10.1117/12.672186; http://dx.doi.org/10.1117/12.672186


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