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Table 4

Mean plate scale and true north orientation for each observing run of the NaCo-LP.

UT Date Platescale True north Calibrator
(mas) (deg)

2009-11-23 13.22 ± 0.02 − 0.17 ± 0.03 θ1 Ori C
2010-02-15 13.21 ± 0.02 − 0.33 ± 0.03 IDS1307
2010-02-18 13.21 ± 0.02 − 0.33 ± 0.03 θ1 Ori C
2010-06-16 13.21 ± 0.02 − 0.53 ± 0.03 IDS1307
2010-07-30 13.21 ± 0.02 − 0.47 ± 0.03 IDS1307
2010-12-30 13.21 ± 0.02 − 0.47 ± 0.03 θ1 Ori C
2011-01-30 13.21 ± 0.02 − 0.49 ± 0.03 θ1 Ori C
2011-05-11 13.21 ± 0.02 − 0.52 ± 0.03 IDS1307
2011-07-02 13.21 ± 0.02 − 0.55 ± 0.03 IDS1307
2012-01-02 13.22 ± 0.02 − 0.59 ± 0.03 IDS1307
2012-01-02 13.22 ± 0.02 − 0.59 ± 0.03 θ1 Ori C

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