Basic instrument parameter-en
- Observing wavelength
- 360 - 1000nm
- Reciprocal resolution
- 65,000 for 0.76 arcsec slit width.100,000 was achieved when the slit width was 0.38 arcsec.
- Detector
- CCD:13.5μm square pixel, 2048x4096 pixels
- Collimator
- off-axis parabola (D=100mm, FL=2850mm)
- Camera
- spherical lens system (D=200mm, FL=855mm)
- Echelle grating
- 31.6 gr/mm (R=2.14, θbl=65°),ruled area|254mmx128mm, Zerodur used with ε=3.6°, γ=8°.
- Cross-disperser
- (1).250 gr/mm (red), λbl=700nm, θbl=5.0°, (2).400 gr/mm (blue), λbl=415nm, θbl=4.76°, ruled area: 150mmx210mm, Zerodur for both, used with ε=0°, γ=45°for both.
- System efficiency
- 3%@500nm
- Limiting magnitude
12mag at V-band
Last-modified: 2008-03-06 (木) 10:44:09 (6328d)
