===Procedure for METIS_img_ifu_cal_platescale ===
 
The plate scale and true North calibration template is used on astrometric fields (asterisms or globular clusters, tied to GAIA) in order to determine the plate-scale and calibrate the true North angle on sky.
The observing template is identical to the ''METIS_ifu_obs_GenericOffset'' or the ''METIS_ifu_ext_obs_GenericOffset'' template, depending on whether the nominal or the extended mode of the IFU is used. It is combined with the ''METIS_ifu_acq'' template that is used to acquire the field.

===Parameters for METIS_img_ifu_cal_platescale ===

^Parameter             ^Hidden     ^Range (default)            ^Label^  
|DPR CATG              |yes        |CALIB TEST (CALIB) |Data product category|
|DPR TYPE              |yes        |PLATESCALE (PLATESCALE)|Data product type|                      
