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Table 1
Summary of imaging and spectroscopic observations.
| Observing mode | Date | Filter | Exp. time | Seeing | Airmass |
| [s] | [′′] | ||||
|
|
|||||
| Masgomas-4 field imaging | 2010 June 23 | J | 108.0 | 0.78 | 1.17–1.21 |
| (A, B, and control) | 2010 June 23 | H | 79.2 | 0.72 | 1.22–1.27 |
| 2010 June 23 | K S | 79.2 | 0.70 | 1.28–1.36 | |
| MOS (R ~ 2500) | 2011 Sept. 16 | H | 2520.0 | 0.83 | 1.18–1.35 |
| Mask region A | 2011 Sept. 16 | K | 1920.0 | 0.86 | 1.40–1.63 |
| MOS (R ~ 2500) | 2011 Sept. 14 | H | 1800.0 | 0.78 | 1.47–1.75 |
| Mask region B | 2011 Sept. 14 | K | 2880.0 | 1.59 | 1.07–1.10 |
| Telluric standard (R ~ 2500) | 2011 Sept. 14 | H | 1080.0 | 0.95 | 1.59–1.94 |
| 2011 Sept. 14 | K | 1800.0 | 1.12 | 1.07–1.19 | |
| 2011 Sept. 16 | H | 1040.0 | 1.16 | 1.50–1.88 | |
| 2011 Sept. 16 | K | 960.0 | 1.63 | 1.94–2.56 | |
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