== P1.9	Internal tip-tilt loop verification == 

- **Phase**		:	1
- **Status**		: 	Draft	 
- **Category**	: 	Unpack, Assemble, and Verification (C1)
- **Recurrence**	: 	once at commissioning
- **Duration**	: 	1 day

**Description**
- Check the working of the internal tip-tilt loop using calibration unit light sources, C-RED2, and ALPAO-DM.

**Prerequisites**
- SCICAM cooled down.

**Procedure**
- Run the internal tip-tilt loop routine for different brightness of the source (star).
- Check its efficiency in keeping the PSF at the C-RED2 hot-pixel.
- Save data to the repository and analyze them.

**Templates**

**Success criteria**
- Internal tip-tilt routine works fine and the PSF ar C-RED2 is stable within the required precision.
- All the data and analysis are saved in the repository.

**Notes**

**LBTO support**
- Liquid Nitrogen refill is required in the cleanroom.

**Date performed and by whom**