Pupil slicer design for the NASA-NSF extreme precision Doppler spectrograph concept WISDOM

Mark Egan; Gábor Fűrész; Robert Simcoe

doi:10.1117/12.2234378

22 July 2016 Pupil slicer design for the NASA-NSF extreme precision Doppler spectrograph concept WISDOM

Mark Egan, Gábor Fűrész, Robert Simcoe

Proceedings Volume 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II; 99121X (2016) https://doi.org/10.1117/12.2234378
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The WIYN Spectrograph for Doppler Monitoring (WISDOM) was a concept responding to NASA's solicitation for an extreme precision radial velocity instrument for the 3.5 meter WIYN telescope on Kitt Peak in Arizona. In order to meet the spectral resolution requirement of R = 110,000 while maintaining good throughput and a manageable beam diameter, the front end design of the instrument employed a pupil slicing technique wherein a collimated beam is sliced and fed to six separate fibers. This paper presents the optical and mechanical design of the pupil slicer subassembly, a unique method of dealing with thermally induced defocus error, and the methods and results of aligning a prototype.

Citation Download Citation

Mark Egan, Gábor Fűrész, and Robert Simcoe "Pupil slicer design for the NASA-NSF extreme precision Doppler spectrograph concept WISDOM", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99121X (22 July 2016); https://doi.org/10.1117/12.2234378

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