Multi-Object Spectrograph Instruments
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| CAFOS | EFOSC-2 | DOLORES | AAOmega/2dF | LIRIS | AF2/WYFFOS | |
|---|---|---|---|---|---|---|
| Year of commissioning | 1997 | 2000 | 2003 | 1994 | ||
| Location | Spain | La Silla | La Palma | Australia | La Palma | La Palma |
| Telescope Name | CAHA 2.2 | NTT | TNG | AAT | WHT | WHT |
| Telescope Size | 2.2 | 3.5 | 3.5 | 3.92 | 4.2 | 4.2 |
| Operated by | CAHA | ESO | INAF | AAO | STFC | STFC |
| Type | Multi-slit | Multi-slit/grism | Multi-slit | Multi-fibre | Multi-slit | Multi-fibre |
| Accessible wavelength range | 0.3-1.1 | 0.3-1.1 | 0.3-1.0 | 0.36-0.9 | 0.8-2.5 | 0.3-1.0 |
| Accessible field ( slit length) | 4'x4' arcmin | 40'arcmin diam | ||||
| Resolving power(s) | 600-3000 | 1500-5000 | 500-6000 | 1300-10000 | ~700-2500 | 100-7500 |
| Unvignetted array dimensions (pixels) | 2x2kx4k | |||||
| Detector pixel size (actual) | 18.5 µm | 13.5 µm | ||||
| Detector pixel size, on sky, across dispersion | 0.25 arcsec | |||||
| Detector pixel size, on sky, along dispersion | ||||||
| Dispersion (nm/pix) | 0.017 to 0.29 | |||||
| No of cross-dispersed orders (echelles only) | from 3 to 7 | |||||
| Spectropolarimetry | No | No | ||||
| Cross Dispersed? | No | optional | ||||
| FP? | No | No | ||||