== [[span(style=color: green, **P1.6 SCICAM refocussing** )]] ==

- **Phase**		:	1  
- **Status**		: 	[[span(style=color: green, **COMPLETE** )]]  	 
- **Category**	: 	Unpack, Assemble, and Verification (C1)
- **Recurrence**	: 	once
- **Duration**	: 	1.5 day

**Description**
- The SCICAM of the SHARK-NIR is believed to be not in-focus position. The detector team at Steward Observatory will have the cryostat at an early stage (prior to SHARK-NIR arriving at LBT) to look into several aspects including the focussing issue. Depending on the outcome of this intervention, refocussing of the cryostat is anticipated.

**Prerequisites**
- SHARK-NIR is connected to the LBT network.
- Electronics cabinets on.
- Steward Observatory Detector Team has completed the work and the information is passed on to the SHARK-NIR team.
- Cryostat cooled down. 


**Procedure**
- Mount the cryostat to the SHARK-NIR optical bench.
- Use several shims one after the other to take images at the detector.
- Using the through-focus images, find the right shim to have the detector at the focus position.
- Make the shim of the right dimensions.
- Use this shim, and mount the cryostat to the SHARK-NIR optical bench.
- Verify that the final configuration produces focused images.

**Templates**

**Success criteria**
- SCICAM is focused.

**Notes**


**LBTO support**
- Support to use of the workshop at LBT.

**Date performed and by whom**