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Table 2
Journal of observations.
| Plate name | Date | MJD | Airmass |
|
|
|||
| NGC 6253_A_N1 | 2008-08-17 | 54 695.04805166 | 1.14 |
| NGC 6253_B_N1 | 2008-08-17 | 54 695.01926262 | 1.168 |
| NGC 6253_A_N2 | 2008-08-20 | 54 698.99723017 | 1.135 |
| NGC 6253_B_N2 | 2008-08-21 | 54 699.02557366 | 1.154 |
| NGC 6253_A_N3 | 2008-08-25 | 54 703.00230984 | 1.143 |
| NGC 6253_B_N3 | 2008-08-25 | 54 703.03139454 | 1.177 |
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