Translator Disclaimer
Poster + Presentation + Paper
13 December 2020 Cementing and testing of the 4MOST WFC/ADC doublets
Author Affiliations +
Conference Poster
Abstract
The 4-meter Multi-Object Spectroscopic Telescope (4MOST) is a wide-field, high-multiplex spectroscopic survey facility under development for the Visible and Infrared Survey Telescope for Astronomy (VISTA) of the European Southern Observatory (ESO). The 4MOST Wide Field Corrector and Atmospheric Dispersion Corrector (ADC) lenses have been manufactured and tested at KiwiStar Optics, New Zealand. The two ADC wedged doublets form a Risley Prism Pair; are both 650 mm in diameter and relatively thin; and have been cemented using Sylgard 184 silicone elastomer. The cementing procedure and its challenges are reported here. Interferometric measurements of the single surfaces, glass blanks and the finished doublets have been compared in order to assess the effect of the cementing process on the final surface figures of the doublets before and after positioning in their cells.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Graeme Jonas, Abe Romeril, Dave Cochrane, Dijana Bogunović, Damien Jones, Samuel C. Barden, and Joar Brynnel "Cementing and testing of the 4MOST WFC/ADC doublets", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 114513A (13 December 2020); https://doi.org/10.1117/12.2561953
PROCEEDINGS
6 PAGES + POSTER + PRESENTATION

SHARE
Advertisement
Advertisement
RELATED CONTENT

Seimei 3.8-m Telescope has been commissioned
Proceedings of SPIE (December 13 2020)
The instrumental profile of the 4MOST facility
Proceedings of SPIE (December 13 2020)
4MOST optical system: presentation and design details
Proceedings of SPIE (September 05 2017)
Straylight And Backscattered Light
Proceedings of SPIE (October 06 1989)

Back to Top