抄録
The adaptive optics application in ground-based astronomy enables diffraction-limited imaging
performance by correcting the wavefront disturbed by the earth’s atmosphere using guide stars,
wavefront sensors, and deformable mirrors. The sky coverage of adaptive optics has been greatly
improved since the Laser Guide Star and Multi-Conjugate Adaptive Optics were introduced. High
sensitivity and high resolution observation enabled by adaptive optics makes it an essential technology,
especially for the extremely large telescopes that are currently under construction. Its superb image
quality is expected to allow the measurement of the position a star to be accurate to one three hundred
millionth of a degree, greatly complicating the expected performance and requirements of client
instruments. This paper reviews the adaptive optics system and its client near-infrared instrument that is
being developed for the Thirty Meter Telescope.
