Three features of Seimei

Segmented mirror

First, Seimei has the segmented mirror system, Japan's first technology. The technology has the potential to realize a more giant mirror. Existing segmented mirror telescopes employ hexagonal segments, but Seimei utilizes petal shape segments.

Ultra-Precision Grinding

Second, ultra-precision grinding dramatically saved the manufacturing time of mirrors.

kensakukenmaban — Ultra-precision grinding and polishing machine that processes the mirror surface of the primary mirror.

Lightweight Mount

Third, Semei's structure consists of trass members often utilized in space structure, and its design was optimized by a genetic algorithm. Seimei's primary mirror is directly supported by two arc-rails underneath. As a result, Seimei is ultra-lightweight, and points target stars in a short time.