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Table 1
Grism-wavelength range choices used on FORS1 to study Ap stars.
| Grism | Wavelength range | H lines | |||
|
|
|||||
| 600 R | 4760–6900 | Ba-α to Ba-β | |||
| 5250–7400 | Ba-α | ||||
| 600 I | 6900–9050 | Pa-10 to Pa-16 | |||
| 600 B | 3470–5880 | Ba-β to Ba-12 | |||
| 1200 B | 3670–5130 | Ba-β to Ba-12 | |||
| 1200 g | 3840–4970 | Ba-β to Ba-η | |||
| 4290–5470 | Ba-β to Ba-γ | ||||
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