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Table 1
Summary of the characteristic of the grisms and CCD most commonly employed for magnetic field measurements.
| Grism | CCD | Wavelength | Dispersion | Spectral | |
| range (Å) | (Å px-1) | res. (1′′) | |||
|
|
|||||
| 600B | SITE | 3470–5900 | 1.20 | 780 | |
| 600B | MIT | 3300–6210 | 0.70 | 800 | |
| 1200B | SITE | 3800–4960 | 0.61 | 1420 | |
| 1200B | MIT | 3660–5110 | 0.43 | 1420 | |
| 1200g | SITE | 4290–5470 | 0.58 | 1400 | |
| 600R | SITE | 5250–7420 | 1.08 | 1160 | |
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