== P3.7	Estimate the instrument throughput == 
•	**Phase**		:	3  
•	**Status**		: 	Draft	 
•	**Category**		: 	Nighttime testing (functionality and operability) (C4)
•	**Recurrence**	: 	once at commissioning
•	**Duration**		: 	50 minutes
**Description**
•	Knowing the magnitude of the acquired star, the throughput of the instrument is verified for all the scientific filters.
**Prerequisites**
•	Atmospheric conditions: photometric.
•	Authorize SHARK-NIR on the SX side.
•	Photometric stars as targets for every filter.
•	AO working.
**Procedure**
•	Take unsaturated images of the photometric star for every science filter.
•	Estimate the instrument throughput for every filter.
**Success criteria**
•	The instrument throughput for every filter is estimated and note down.
**Notes**
**LBTO support**
•	Support from LBTI/LBTO?
•	Presence of John Hill usually helps while collimating for the first time. 
•	Steve Allenson (as the TO) will be a great asset too.
**Associated SHARK-NIR personnel**
•	JF, LM, MdP, MM (from AZ), DV?
**Date performed and by whom**