9 July 2008 Development of mid-infrared spectrometer with an image slicer (MIRSIS) for ground-based astronomy: developing optical and mechanical mounts
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Abstract
Mid-Infrared Spectrometer with an Image Slicer (MIRSIS) is a 10micron band spectrometer for ground-based observations. Based on the optical design reported in Okamoto et al. (2006), we recently developed most of optical elements and their mounts. There, we adopted designs based on an ultra-precision cut for the slice mirrors and the pupil mirrors. We also designed and partly manufactured the optical parts with switching/adjusting mechanism with cryogenic step motors. Since MIRSIS has a very complicated stereoscopic configuration of optical elements, we developed a method to adjust the optical alignment where relative positional markers and a three-dimensional measuring system are combined. We confirmed that we can achieve position and angular adjustment with error down to 0.1mm and 0.05degree through alignment test with a pair of mirrors.
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Yoshiko Kataza Okamoto, Hirokazu Kataza, Keigo Sato, Kei Manabe, Kenji Mitsui, Norio Okada, Mitsuhiro Fukushima, Tetsuo Nishino, Koji Tomita, Masamune Tosa, Takashi Onaka, "Development of mid-infrared spectrometer with an image slicer (MIRSIS) for ground-based astronomy: developing optical and mechanical mounts", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70142B (9 July 2008); doi: 10.1117/12.788575; https://doi.org/10.1117/12.788575
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