Abstract
MOIRCS (Multi-Object InfraRed Camera and Spectrograph) is one of the second generation instruments for the Subaru Telescope. This instrument is under construction by the National Astronomical Observatory of Japan and Tohoku University. It has imaging and multi-object spectroscopy (MOS) capabilities in the wavelength range from 0.85 μm to 2.5 μm with 4′ × 7′ F.O.V. The focal plane is imaged onto two 2048 × 2048 pixel HAWAII-2 HgCdTe arrays with a pixel scale of 0.″12 pixel-1 through two independent optical trains. The optical design is optimized to maximize K band performance. Unique design of MOIRCS allows multi-object spectroscopy out to K band with cooled multi-slit masks. Twenty-four masks are stored in a mask dewar and are exchanged in the cryogenic environment. The mask dewar has its own vacuum pump and cryogenic cooler, and the masks can be accessed without breaking the vacuum of the main dewar. The two-channel optics and arrays are mounted back-to-back of a single optical bench plate. A PC-Linux based infrared array control system has been prepared to operate HAWAII-2. The first light of MOIRCS is planned in the spring of 2003.
| Original language | English |
|---|---|
| Pages (from-to) | 1625-1633 |
| Number of pages | 9 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 4841 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 Dec 1 |
| Event | Instrument Design for Optical/Infrared Ground-based Telescopes - Waikoloa, HI, United States Duration: 2002 Aug 25 → 2002 Aug 28 |
Keywords
- Cooled optics
- Infrared FPA
- Infrared astronomical instrument
- Multi-object spectroscopy
- Multi-slit mask
- Near-infrared
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering