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Gil de Paz, Armando (2016) MEGARA. High-precision alignment system for gluing fibers and microlenses. In Advacnes in optical and mechanical technologies for telescopes and instrumentation II. Conference Proceedings, 9912 . SPIE-Iint. Soc. Optical Engineering. ISBN 978-1-5106-0203-8
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Official URL: http://dx.doi.org/10.1117/12.2232620
Abstract
MEGARA is the multi-object medium-resolution spectrograph for the GTC 10m telescope. MEGARA offers two observing modes, the LCB mode, a large central IFU; and a MOS mode composed by 92 robotic positioners carrying 7 fibers minibundles. Microlens are required to fit the GTC f/17 to the f/3 at the fiber entrance, where pupil image is oversized to have a fiber-to-fiber flux variation better than 10%. This tight requirement imposed manufacturing tolerances for the different components and required the development of a gluing station to provide a centering precision better than 5μm. We present the overview of the optical bundles, the gluing station and the final performance obtained during the integration and tests.
| Item Type: | Book Section |
|---|---|
| Additional Information: | © 2016 SPIE. Artículo firmado por 14 autores & MEGARA Team. Conference on Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II (2016. Edimburgh/UK). |
| Uncontrolled Keywords: | Megara; Integral field unit (IFU); Multi-object spectrograph (MOS); Fiber bundles; Fiber and microlens gluing station; High precision alignment; Fiber-to-fiber flux homogneneity; GTC |
| Subjects: | Sciences > Physics > Astrophysics Sciences > Physics > Astronomy |
| ID Code: | 62891 |
| Deposited On: | 30 Oct 2020 11:18 |
| Last Modified: | 30 Oct 2020 11:18 |
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