In "Scientific and Engineering Frontiers for 8-10m Telescopes
- Instrumentation for Large Telescopes in the 21st Centrury",
Ed. M. Iye and T. Nishimura, 1995, Universal Academy Press, Inc.,
pp.155-160.
ISBN 4-946443-27-4
Tetsuo Nishimura, Daigo Tomono and Naohisa Sato
National Astronomical Observatory of Japan,
2-21-1, Osawa, Mitaka, Tokyo 181 JAPAN
We are constructing an infrared imager to evaluate and monitor the performance of the Japanese National Large Telescope 'Subaru' during the commissioning phase. The system consists of two array cameras, one for near-infrared and one for mid-infrared, and captures simultaneous images at both wavelengths fast enough to freeze the seeing. The data will be used to study image reconstruction techniques suited for mid-infrared. The system also has a telescope emissivity mapper that images the telescope pupil and its surroundings onto a third array. The first phase of the system consists of a two-wavelength imager using a single 256 x 256 InSb array and an emissivity mapper using a 128 x 128 InSb array. We plan to test the system on existing telescopes as we develop the system. This paper describes the background and the design concept of the system. A modular construction of the system allows flexible configuration of the system.
Key Words: infrared camera, Subaru telescope