== SDC6	Detector persistence == 
•	**Phase**		:	Any  
•	**Status**		: 	Draft	 
•	**Category**		: 	Daytime calibration (C3)
•	**Recurrence**	: 	once every 1-3 months starting from commissioning.
•	**Duration**		: 	20 minutes
**Description**
•	Monitor persistence after saturation. 
**Prerequisites**
•	Instrument and dome closed. No lights inside dome.
**Procedure**
•	Record a background exposure, then one highly saturated exposure; then a long series of exposures with source off. 
•	CI B_H, point source.
**Success criteria**
•	Accuracy of photometry 10%  
**Notes**
•	Same as activity 9.3 in AD4
**LBTO support**

**Associated SHARK-NIR personnel**

**Date performed and by whom**,


**Comments**

MB: Also this might happen only in clean room
Concerning teh duration it should be better specificed until how much time after the saturated exposure you want to keep recording images. This will drive the duration of the tests