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http://hdl.handle.net/20.500.12386/26367
Title: | Manufacturing process for the WEAVE prime focus corrector optics for the 4.2m William Hershel Telescope | Authors: | Lhomé, Emilie Agócs, Tibor Abrams, Don Carlos Dee, Kevin M. Middleton, Kevin F. Tosh, Ian A. Jaskó, Attila Connor, Peter Cochrane, Dave Gers, Luke Jonas, Graeme RAKICH, ANDREW Benn, Chris R. Balcells, Marc Trager, Scott C. Dalton, Gavin B. Carrasco, Esperanza VALLENARI, Antonella BONIFACIO, PIERCARLO Aguerri, J. Alfonso L. |
Issue Date: | 2016 | Volume: | Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II | Editors: | Navarro, Ramón; Burge, James H. | Series: | PROCEEDINGS OF SPIE | Number: | 9912 | First Page: | 991245 | Abstract: | In this paper, we detail the manufacturing process for the lenses that will constitute the new two-degree field-of-view Prime Focus Corrector (PFC) for the 4.2m William Herschel Telescope (WHT) optimised for the upcoming WEAVE Multi-Object Spectroscopy (MOS) facility. The corrector, including an Atmospheric Dispersion Corrector (ADC), is made of six large lenses, the largest being 1.1-meter diameter. We describe how the prescriptions of the optical design were translated into manufacturing specifications for the blanks and lenses. We explain how the as-built glass blank parameters were fed back into the optical design and how the specifications for the lenses were subsequently modified. We review the critical issues for the challenging manufacturing process and discuss the trade-offs that were necessary to deliver the lenses while maintaining the optimal optical performance. A short description of the lens optical testing is also presented. Finally, the subsequent manufacturing steps, including assembly, integration, and alignment are outlined. | Conference Name: | Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II | Conference Place: | Edinburgh, UK | Conference Date: | 26 June - 1 July, 2016 | URI: | http://hdl.handle.net/20.500.12386/26367 | URL: | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9912/1/Manufacturing-process-for-the-WEAVE-prime-focus-corrector-optics-for/10.1117/12.2230648.full | ISSN: | 0277-786X | ISBN: | 9781510602045 | DOI: | 10.1117/12.2230648 | Bibcode ADS: | 2016SPIE.9912E..45L | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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991201.pdf | 583.49 kB | Adobe PDF | View/Open |
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