HyperSuprime: imaging optics

Yutaka Komiyama; Satoshi Miyazaki; Yoshiyuki Doi; Hidehiko Nakaya; Hisanori Furusawa; Kunio Takeshi; Kyoji Nariai

doi:10.1117/12.670721

29 June 2006 HyperSuprime: imaging optics

Yutaka Komiyama, Satoshi Miyazaki, Yoshiyuki Doi, Hidehiko Nakaya, Hisanori Furusawa, Kunio Takeshi, Kyoji Nariai

Proceedings Volume 6269, Ground-based and Airborne Instrumentation for Astronomy; 62693E (2006) https://doi.org/10.1117/12.670721
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

We summarize the optical design of the wide-field corrector for HyperSuprime which is being considered as a next generation prime focus camera for Subaru Telescope. Two optical designs are investigated under several design constraints such as image quality, field curvature, focal length, etc. The corrector with 2 degree field of view attains good image quality at the wavelength between 600 nm and 1100 nm although the first lens is large (1.2 m in diameter) and three aspherical surfaces are required. The image quality for shorter wavelength than 600 nm is fair. The incident light blocked at the edge of the field is only 20% and the transmission is more than 80% if the multi-layer coating applied for the current Subaru prime focus corrector is available. The corrector with 1.5 degree field of view is designed as a smaller version of 2 degree corrector. The properties and performance of 1.5 degree corrector resemble those of 2 degree corrector, but 1.5 degree corrector has a merit that the focal plane is flat. The availability of large fused-silica blank up to about 200 kg is promising.

Citation Download Citation

Yutaka Komiyama, Satoshi Miyazaki, Yoshiyuki Doi, Hidehiko Nakaya, Hisanori Furusawa, Kunio Takeshi, and Kyoji Nariai "HyperSuprime: imaging optics", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62693E (29 June 2006); https://doi.org/10.1117/12.670721

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