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Table 5
Mean platescale and true north orientation measured on the θ1 Ori C field with the NaCo and L′/L27 set-up.
| ESO program | UT-date | Platescale | True north |
| (mas) | (deg) | ||
|
|
|||
| 084.C-0396A | 11/24/2009 | 27.09 ± 0.02 | −0.08 ± 0.01 |
| 085.C-0675A | 07/27/2010 | 27.12 ± 0.03 | −0.36 ± 0.05 |
| 085.C-0277B | 09/28/2010 | 27.11 ± 0.04 | −0.36 ± 0.11 |
| 087.C-0292A | 12/18/2011 | 27.10 ± 0.03 | −0.60 ± 0.01 |
| 087.C-0450B | 12/08/2011 | 27.16 ± 0.08 | −0.52 ± 0.07 |
| 088.C-0885A | 02/19/2011 | 27.10 ± 0.03 | −0.38 ± 0.03 |
| 089.C-0149A | 08/24/2012 | 27.11 ± 0.02 | −0.41 ± 0.07 |
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