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astro-ph.IM2012★ 6 cited
Impact of surface-polish on the angular and wavelength dependence of fiber focal ratio degradation
Arthur D. Eigenbrot, Matthew A. Bershady, Corey M. Wood
We present measurements of how multimode fiber focal-ratio degradation (FRD) and throughput vary with levels of fiber surface polish from 60 to 0.5 micron grit. Measurements used f…
astro-ph.IM2012★ 4 cited
HexPak and GradPak: variable-pitch dual-head IFUs for the WIYN 3.5m Telescope Bench Spectrograph
Corey M. Wood, Matthew A. Bershady, Arthur D. Eigenbrot +6
We describe the design, construction, and expected performance of two new fiber integral field units (IFUs) --- HexPak and GradPak --- for the WIYN 3.5m Telescope Nasmyth focus and…