The Fibre Multi-Object Spectrograph (FMOS) for Subaru Telescope

Kimura, Masahiko; Maihara, Toshinori; Iwamuro, Fumihide; Akiyama, Masayuki; Tamura, Naoyuki; Dalton, Gavin; Takato, Naruhisa; Tait, Philip J.; Ohta, Kouji; Eto, Shigeru; Mochida, Daisaku; Elms, Brian; Kawate, Kaori; Kurakami, Tomio; Moritani, Yuki; Noumaru, Junichi; Ohshima, Norio; Sumiyoshi, Masanao; Yabe, Kiyoto; Brzeski, Jurek; Farrell, Tony; Frost, G. Allan; Gillingham, Peter; Haynes, Roger; Moore, Anna; Müller, Rolf; Scott, Smedley,; Smith, Greg; Bonfield, D. G.; Brooks, C.B.; Holmes, A.; Lake, Emma Curtis; Lee, Hanshin; Lewis, Ian; Froud, Tim R.; Tosh, Ian; Woodhouse, Guy F.W.; Blackburn, Colin; Dipper, N. A.; Murray, Graham K.; Sharples, R. M.; Robertson, David J.

doi:10.48550/arxiv.1006.3102

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“…To reduce reconfiguration time and labor, there has been a shift toward robotically positioned fibers. Robotic systems have been demonstrated on both the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST; Cui et al 2012) and the Fiber Multi-Object Spectrograph (FMOS; Kimura et al 2010) on the Subaru telescope. The robotic parallel controllable fiber positioning system of LAMOST was first proposed in 1998 (Xing et al 1998).…”

Section: Introductionmentioning

confidence: 99%

The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)

Silber

Fagrelius

Fanning

et al. 2022

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A system of 5020 robotic fiber positioners was installed in 2019 on the Mayall Telescope, at Kitt Peak National Observatory. The robots automatically retarget their optical fibers every 10–20 minutes, each to a precision of several microns, with a reconfiguration time of fewer than 2 minutes. Over the next 5 yr, they will enable the newly constructed Dark Energy Spectroscopic Instrument (DESI) to measure the spectra of 35 million galaxies and quasars. DESI will produce the largest 3D map of the universe to date and measure the expansion history of the cosmos. In addition to the 5020 robotic positioners and optical fibers, DESI’s Focal Plane System includes six guide cameras, four wave front cameras, 123 fiducial point sources, and a metrology camera mounted at the primary mirror. The system also includes associated structural, thermal, and electrical systems. In all, it contains over 675,000 individual parts. We discuss the design, construction, quality control, and integration of all these components. We include a summary of the key requirements, the review and acceptance process, on-sky validations of requirements, and lessons learned for future multiobject, fiber-fed spectrographs.

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Section: Introductionmentioning

confidence: 99%