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Table 1.
Summary of the observations.
| Blue arm |
Red arm |
|||||||
|---|---|---|---|---|---|---|---|---|
| Year | Grating | λcen (Å ) | Range (Å ) | λ/δλ | Grating | λcen (Å ) | Range (Å ) | λ/δλ |
| 2010 | 580V | 4500 | ∼2100 | ∼1300 | 1700D | 8600 | ∼500 | ∼10 000 |
| 2011 | 1500V | 4400 | ∼800 | ∼3700 | 1700D | 8700 | ∼500 | ∼10 000 |
| 2012 | 1500V | 5200 | ∼800 | ∼3700 | 1700D | 8700 | ∼500 | ∼10 000 |
| 2012 | 580V | 4800 | ∼2100 | ∼1300 | 1700D | 8700 | ∼500 | ∼10 000 |
| 2013 | 580V | 4800 | ∼2100 | ∼1300 | 1700D | 8700 | ∼500 | ∼10 000 |
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