Precision pointing control for SPICA: requirements and feasibility study

Shinji Mitani; Takanori Iwata; Ken Fujiwara; Shin-ichiro Sakai; Keigo Enya; Takayuki Kotani; Hideo Matsuhara; Takao Nakagawa; Toshio Matsumoto; Woong-Seob Jeong; Dae-Hee Lee

doi:10.1117/12.857173

10 August 2010 Precision pointing control for SPICA: requirements and feasibility study

Shinji Mitani, Takanori Iwata, Ken Fujiwara, Shin-ichiro Sakai, Keigo Enya, Takayuki Kotani, Hideo Matsuhara, Takao Nakagawa, Toshio Matsumoto, Woong-Seob Jeong, Dae-Hee Lee

Author Affiliations +

Proceedings Volume 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave; 77314D (2010) https://doi.org/10.1117/12.857173
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

The SPICA mission aims to achieve high spatial resolution and unprecedented sensitivity in the mid to farinfrared wavelength astronomy. We derived a set of pointing requirements from SPICA's mission requirements. Disturbance management over the SPICA system and an implementation of isolators are necessary, because cryogenic coolers' disturbances could generate vibration. Alignment and random pointing errors for focal-plane instruments are reduced with a focal-plane guidance camera. Furthermore, an additional focal-plane camera and a tip-tilt mirror actuator are installed for coronagraph mode. This paper presents an overview of the SPICA pointing requirements and a feasibility study to achieve the requirements.

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Shinji Mitani, Takanori Iwata, Ken Fujiwara, Shin-ichiro Sakai, Keigo Enya, Takayuki Kotani, Hideo Matsuhara, Takao Nakagawa, Toshio Matsumoto, Woong-Seob Jeong, and Dae-Hee Lee "Precision pointing control for SPICA: requirements and feasibility study", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 77314D (10 August 2010); https://doi.org/10.1117/12.857173

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KEYWORDS

Stars

Coronagraphy

Sensors

Cameras

Mirrors

Control systems

Spectroscopy

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