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Table 1
Fibre link characteristics.
| LRF | HRF | |
|
|
||
| Fibre core diameter | 60 μm | 80 μm |
| Sky aperture | 2.15 arcsec | 2.50 arcsec |
| Aperture diameter | 150 μm | 175 μm |
| Microlens: | ||
| Focal length | 0.65 mm | 0.85 mm |
| Lens glass type | N-LAK33 | N-BAK1 |
| Glass refractive index nd | 1.75 | 1.57 |
| Radius of curvature | 0.50 mm | 0.50 mm |
| Lens thickness | 1.15 mm | 1.35 mm |
| Lens diameter | 0.90 mm | 0.90 mm |
| Entrance focal ratio | f/4.35 | f/4.9 |
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