Paper 13100-16
Paper 13100-16
Design method for ultra-wide field telescopes with manufacturable freeform surfaces
16 June 2024 • 15:35 - 15:50 Japan Standard Time | Room G214, North - 2F
Abstract
It is difficult to manufacture a wide-field telescope using freeform surfaces due to the large gradient of the freeform surfaces. We propose a design method to minimize the gradient by analytical calculations based on the aberration theory. This method has realized the optical system with three mirrors achieving a field-of-view of 16 square degrees with F/3 and 200 mm aperture. The maximum gradient of the freeform surfaces is 98 mdeg, which is reduced by 46% from previous study.
Presenter
Takeshi Hashigaya
Kyoto Univ. (Japan)
Takeshi Hashigaya is a first-grade doctoral student in the Department of Astrophysics at Kyoto University. His research interests include the design and manufacture of optical systems and the formation and evolution of galaxies. He has recently started to develop an ultra-wide-field telescope using freeform surfaces. In the future, he hopes to discover distant galaxies through survey observations with this type of telescope.