Optical design and performance of the 12- to 26-µm channel (MIR-L) of the infrared camera on board ASTRO-F

Naofumi Fujishiro; Hideo Matsuhara; Yuji Ikeda; Tomoyasu Yamamuro; Norihide Takeyama; Takashi Onaka; Hirokazu Kataza; Takehiko Wada; Kazunori Uemizu; Itsuki Sakon; Chiaki Ihara; Daisuke Ishihara; Woojung Kim; Munetaka Ueno; Hidenori Watarai; Hiroshi Murakami

doi:10.1117/12.551538

12 October 2004 Optical design and performance of the 12- to 26-μm channel (MIR-L) of the infrared camera on board ASTRO-F

Naofumi Fujishiro, Hideo Matsuhara, Yuji Ikeda, Tomoyasu Yamamuro, Norihide Takeyama, Takashi Onaka, Hirokazu Kataza, Takehiko Wada, Kazunori Uemizu, Itsuki Sakon, Chiaki Ihara, Daisuke Ishihara, Woojung Kim, Munetaka Ueno, Hidenori Watarai, Hiroshi Murakami

Author Affiliations +

Proceedings Volume 5487, Optical, Infrared, and Millimeter Space Telescopes; (2004) https://doi.org/10.1117/12.551538
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

MIR-L is a 12-26μm channel of Infrared Camera(IRC) onboard ASTRO-F. The camera employs a refractive optics which consists of 5 lenses (CsI - CsI - KRS-5 - CsI - KRS-5) and a large format Si:As IBC array detector (256 x 256 pixels). The design concept is to realize a wide field of view with a compact size. It has 2 observing modes: a wide field imaging with a field of view of 10.7 x 10.2arcmin² or a pixel resolution of 2.5 x 2.4arcsec²/pixel in 3 bands (12.5-18μm, 14-26μm, 22-26μm), and low resolution spectroscopy with a spectral resolution R = λ/Δλ ≈40 in 2 bands 11-19μm,18-26μm). It also has a small slit to adapt for spectroscopic observations of extended sources. We describe the current design of the optics and the mounting architecture of MIR-L and evaluation of the optical performance at cryogenic temperatures.

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Naofumi Fujishiro, Hideo Matsuhara, Yuji Ikeda, Tomoyasu Yamamuro, Norihide Takeyama, Takashi Onaka, Hirokazu Kataza, Takehiko Wada, Kazunori Uemizu, Itsuki Sakon, Chiaki Ihara, Daisuke Ishihara, Woojung Kim, Munetaka Ueno, Hidenori Watarai, and Hiroshi Murakami "Optical design and performance of the 12- to 26-μm channel (MIR-L) of the infrared camera on board ASTRO-F", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); https://doi.org/10.1117/12.551538

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KEYWORDS

Sensors

Infrared cameras

Point spread functions

Cryogenics

Spectroscopy

Optical design

Lenses

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