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Table 3
Values of the plate scale and the true north for IRDIS observations measured during in each run of the observations.
| Date | Plate scale (mas/px) | True north (deg) |
|
|
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| Left field | ||
|
|
||
| July 2014 | 12.252 ± 0.006 | − 1.636 ± 0.013 |
| August 2014 | 12.263 ± 0.006 | − 1.636 ± 0.013 |
| December 2014 | 12.251 ± 0.005 | − 1.764 ± 0.010 |
|
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| Right field | ||
|
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| July 2014 | 12.247 ± 0.006 | − 1.653 ± 0.005 |
| August 2014 | 12.258 ± 0.006 | − 1.653 ± 0.005 |
| December 2014 | 12.241 ± 0.004 | − 1.778 ± 0.010 |
Notes. Values of July and August 2014 have been measured for the H2H3 filter, while December values refer to BB_H band filter. The measurements for the left and right parts of the IRDIS detector are shown.
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