Open Access
Table 1.
Details of the GTC MEGARA observations of A 58 analyzed in this work.
| Dispersion element | R | Spectral range | Exposure time | Moon | Sky | Airmass | Seeing |
|---|---|---|---|---|---|---|---|
| (Å) | (s) | (arcsec) | |||||
| VPH665HR-R | 20 050 | 6405.6–6798.0 | 3 × 300 | Dark | Clear | 1.49 | 0.9 |
| VPH481MR-B | 13 200 | 4585.7–5025.1 | 3 × 600 | Dark | Clear | 1.43 | 0.9 |
| VPH443MR-UB | 13 050 | 4226.4–4625.8 | 6 × 900 | Dark | Clear | 1.57 | 0.9 |
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