Volume phase holographic grating performance on the VIRUS-P instrument

Joshua J. Adams; Gary J. Hill; Phillip J. MacQueen

doi:10.1117/12.788242

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9 July 2008 Volume phase holographic grating performance on the VIRUS-P instrument

Joshua J. Adams, Gary J. Hill, Phillip J. MacQueen

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Proceedings Volume 7014, Ground-based and Airborne Instrumentation for Astronomy II; 701471 (2008) https://doi.org/10.1117/12.788242
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The Visible Integral-field Replicable Unit Spectrograph Prototype (VIRUS-P) has been in operation on the Harlan J Smith 2.7m Telescope at McDonald Observatory since October of 2006. The prototype was created to test the design and science capabilities of the full VIRUS instrument, wherein 150 copies of the spectrograph will be installed on the Hobby Eberly Telescope (HET). We here discuss the specialized test bench built to assess the blue optimized Volume Phase Holographic (VPH) grating performance. We also give lab and on-telescope efficiency measurements for three such gratings in the wavelength range 3400-6800Å. Two sources of stray light relevant to most spectrograph designs are also discussed.

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Joshua J. Adams, Gary J. Hill, and Phillip J. MacQueen "Volume phase holographic grating performance on the VIRUS-P instrument", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 701471 (9 July 2008); https://doi.org/10.1117/12.788242

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