The SDSS-V local volume mapper fibre cable assembly and metrology

Tobias Feger; Ellen Houston; Yevgen Kripak; Ross Zhelem; Timothy Chin; David Adams; Scott Case; David Robertson; Jon Lawrence; Tom M. Herbst; Pavan Bilgi; Nicholas P. Konidaris II; Leon Aslan; Guillermo Blanc; Stefanie Wachter; Solange Ramírez; Niv Drory; Juna Kollmeier; Cynthia S. Froning

doi:10.1117/12.2629083

7 October 2022 The SDSS-V local volume mapper fibre cable assembly and metrology

Tobias Feger, Ellen Houston, Yevgen Kripak, Ross Zhelem, Timothy Chin, David Adams, Scott Case, David Robertson, Jon Lawrence, Tom M. Herbst, Pavan Bilgi, Nicholas P. Konidaris II, Leon Aslan, Guillermo Blanc, Stefanie Wachter, Solange Ramírez, Niv Drory, Juna Kollmeier, Cynthia S. Froning

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121846Q (2022) https://doi.org/10.1117/12.2629083
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

The Sloan Digital Sky Survey V (SDSS–V) is an all-sky spectroscopic survey of <6 million objects, designed to decode the history of the Milky Way, reveal the inner workings of stars, investigate the origin of solar systems, and track the growth of supermassive black holes across the universe. The Local Volume Mapper (LVM) is a facility designed to provide a contiguous 2500 deg₂integral-field survey over a 3.5 year period from Las Campa˜nas Observatory (LCO) in Chile. The facility comprises four 0.16 m bench-mounted telescopes that feed three multiobject spectrographs with 1801 science fibres, 119 calibration fibres, and 24 sky-background fibres. The fibre cable spans approximately 20 meters from the telescope platform to the spectrograph slits. A sorting hat, located in the spectrograph room, redistributes the 1944 fibres into three 648–element bundles that terminate at the spectrograph slits. In this paper, we briefly summarize the current production progress of the integral-field units, the spectrograph slits, and the sorting hat.

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Tobias Feger, Ellen Houston, Yevgen Kripak, Ross Zhelem, Timothy Chin, David Adams, Scott Case, David Robertson, Jon Lawrence, Tom M. Herbst, Pavan Bilgi, Nicholas P. Konidaris II, Leon Aslan, Guillermo Blanc, Stefanie Wachter, Solange Ramírez, Niv Drory, Juna Kollmeier, and Cynthia S. Froning "The SDSS-V local volume mapper fibre cable assembly and metrology", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121846Q (7 October 2022); https://doi.org/10.1117/12.2629083

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KEYWORDS

Spectrographs

Metrology

Inspection

Telescopes

Tolerancing

Interfaces

Polishing

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