== P3.14	Astrometry plate scale and orientation == 
•	**Phase**		:	3  
•	**Status**		: 	Draft	 
•	**Category**		: 	Nighttime testing (functionality and operability) (C4)
•	**Recurrence**	: 	every night starting from commissioning
•	**Duration**		: 	0.5 - 1.0 hours
**Description**
•	Determine the astrometry of the science frame. Deduce detector on sky coordinates & plate scale from RA & DEC of a known multiple stellar systems. This calibration is to be done for a reference setup. 
**Prerequisites**
•	Authorize SHARK-NIR on the SX side.
•	Atmospheric conditions: AO working conditions.
•	Bad pixel map, Background or Dark, Flat-field, distortion map 
**Procedure**
•	Observe multiple system(s) with known characteristics without the coronagraph 
**Success criteria**
•	Image scale better than 5 mas (goal 0.5 mas) over FoV, image orientation better than 3 arcmin (goal 18 arcsec) 
**Notes**
•	Same as activity 7.1 in AD4
**LBTO support**
•	Support from LBTI/LBTO?
**Associated SHARK-NIR personnel**
•	JF, LM, MdP
**Date performed and by whom**