Paper
31 July 2014 Design and performance of a F/#-conversion microlens for prime focus spectrograph at Subaru Telescope
Author Affiliations +
Abstract
The PFS is a multi-object spectrograph fed by 2394 fibers at the prime focus of Subaru telescope. Since the F/# at the prime focus is too fast for the spectrograph, we designed a small concave-plano negative lens to be attached to the tip of each fiber that converts the telescope beam (F/2.2) to F/2.8. We optimized the lens to maximize the number of rays that can be confined inside F/2.8 while maintaining a 1.28 magnification. The microlenses are manufactured by glass molding, and an ultra-broadband AR coating (<1.5% for λ = 0.38 - 1.26μm) will be applied to the front surface.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Naruhisa Takato, Yoko Tanaka, James E. Gunn, Naoyuki Tamura, Atsushi Shimono, Hajime Sugai, Hiroshi Karoji, Akitoshi Ueda, Kouichi Waseda, Masahiko Kimura, and Youichi Ohyama "Design and performance of a F/#-conversion microlens for prime focus spectrograph at Subaru Telescope", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914765 (31 July 2014); https://doi.org/10.1117/12.2055051
Lens.org Logo
CITATIONS
Cited by 3 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Microlens

Spectrographs

Telescopes

Optical instrument design

Glass molding

Manufacturing

Astronomy

RELATED CONTENT


Back to Top