== P1.11	Check the working of the internal NCPA routine and looking for filter defects/artifacts == 
•	**Phase**		:	2  
•	**Status**		: 	Draft	 
•	**Category**		: 	Daytime testing (functionality and operability) (C2)???
•	**Recurrence**	: 	once at commissioning
•	**Duration**		: 	1 day
**Description**
•	Check the working of the internal NCPA routine. Finding the filter defects/artifacts using an internal calibration source (flat /on-axis PSF?) within the instrument.

**Prerequisites**
•	SCICAM cooled down.

**Procedure**
•	Run the Phase-diversity routine using the images taken with the SHARK-NIR internal calibration sources to measure the NCPA within (excluding the deployable arm)
* Take the images of all the filters using the internal calibration source within the instrument to locate/find out the filter defects/artifacts, if any.
•	You may take short- and long-exposures to get better contrast of the features if required.

**Success criteria**
* Internal NCPA routine works fine and the PSF shows improvement in its quality.
•	All the filter images saved.
**Notes**
•	The time dedicated to this activity has to be considered in combination with the other activities if needed. Parallelism is possible.
**LBTO support**

**Associated SHARK-NIR personnel**

**Date performed and by whom**

**Comments**

DM: flat field or on-axis fiber? I don't know how they do it in SPHERE, but I think a flat field source is more suitable.