Development of the optical and infrared interferometer MIRA-I.2

Koichi Sato; Jun Nishikawa; Masanori Yoshizawa; Toshio Fukushima; Yoshihiro Machida; Yukihiro Honma; Ryuichiro Kuwabara; Shunsaku Suzuki; Yasuo Torii; Koichi Kubo; Ko Matsuda; Hikaru Iwashita

doi:10.1117/12.317198

24 July 1998 Development of the optical and infrared interferometer MIRA-I.2

Koichi Sato, Jun Nishikawa, Masanori Yoshizawa, Toshio Fukushima, Yoshihiro Machida, Yukihiro Honma, Ryuichiro Kuwabara, Shunsaku Suzuki, Yasuo Torii, Koichi Kubo, Ko Matsuda, Hikaru Iwashita

Author Affiliations +

Proceedings Volume 3350, Astronomical Interferometry; (1998) https://doi.org/10.1117/12.317198
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The MIRA-1.2 system consists of two siderostats, beam reducers, vacuum delay liens, baseline metrology system, tip-tilt mirrors, beam combine optics, and fringe detector. Two siderostats, of which aperture of the flat mirror is 300mm, are placed apart by 4 meters in the north-south direction. Beam reducer is a Cassegrain optics with the paraboloidal primary and secondary mirrors of the diameter D₁ equals 200mm and D₂ equals 30mm, respectively. The metrology system with laser interferometers is set up to stabilize the baseline length for astrometry. Piezo-driven tip-tilt mirrors are equipped for the correction of image motions due to the air turbulence and other errors. Delay lines are placed in a vacuum tube. Experiments of the fiber optics is carried out as a part of MIRA-1.2. Developing MIRA-1.2 system, it is aimed to establish the basic techniques of astrometry and future projects, especially of MIRA-II.

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Koichi Sato, Jun Nishikawa, Masanori Yoshizawa, Toshio Fukushima, Yoshihiro Machida, Yukihiro Honma, Ryuichiro Kuwabara, Shunsaku Suzuki, Yasuo Torii, Koichi Kubo, Ko Matsuda, and Hikaru Iwashita "Development of the optical and infrared interferometer MIRA-I.2", Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); https://doi.org/10.1117/12.317198

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