== [[span(style=color: green, **P3.16	Instrumental throughput and absolute flux calibration** )]]== 
 
- **Phase**		:	3  
- **Status**		: 	[[span(style=color: green, **COMPLETE** )]]
- **Category**	: 	Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
- **Recurrence**	: 	once every month starting from commissioning and then on request for accurate photometry (using CI and DBI).
- **Duration**	: 	4 hours

**Description**
- Throughput calibration to obtain absolute flux calibration of science targets.

**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 a spectro-photometric standard star of known magnitude with no coronagraph and required filters.

**Templates**
- SHARKNIR_lss_cal_AbsoluteFlux

**Success criteria**
- Flux measurement better than 10% 

**Notes**
- Same as activity 7.3 in AD4

**LBTO support**
- AO support

**Date performed and by whom**