XOPT Poster Session

[XOPTp-03] Development of high-precision electroformed Wolter mirror for X-ray telescope

*Shutaro Mohri¹, Shunsuke Ito¹, Satoru Egawa¹, Hiroto Motoyama¹, Guo Jianli¹, Gota Yamaguchi², Takehiro Kume³, Yusuke Matsuzawa³, Hidekazu Takano², Yoshiki Kohmura², Makina Yabashi², Hidekazu Mimura^1,2 (1. The University of Tokyo, 2. SPring-8, RIKEN, 3. Technology Center, Natsume Optical Corporation)

We newly developed the figure correction apparatus for the master mandrel to improve the figure accuracy of Wolter mirror equipped as imaging optics in FOXSI-4 project. The imaging performance of Wolter mirror fabricated with the mandrel was evaluated at BL29XU, SPring-8. HPD of EEF was 4 arcsec and 17 arcsec when X-ray of 12 keV was applied to the machining area, and the non-machining area, respectively.