== P2.8	Flexure tests == 
•	**Phase**		:	2  
•	**Status**		: 	Draft	 
•	**Category**		: 	Daytime testing (functionality and operability) (C2)
•	**Recurrence**	: 	once at commissioning
•	**Duration**		: 	3 hour(s)
**Description**
•	This activity corresponds to the flexure tests for the SHARK-NIR. 
**Prerequisites**
•	If relevant, estimate and remove the NCPA using phase-diversity method.
•	RR mounted on SX side.
**Procedure**
•	Test the positions of the various opto-mechanical components within the instrument using optical feedback while moving the telescope in elevation. 
•	Change the velocity and acceleration of the movement of the telescope in elevation if required.
•	Remember to perform the tests for all the observing modes (whatever possible with RR or internal light sources)
•	You may want to disentangle the flexure of the RR while moving the telescope in elevation by comparing the optical feedback for the same movement with the internal light source.
•	This test will also test the working of the LBTO AO system while the telescope is moving in elevation.
•	Compare the results with that of Padova flexure tests.
**Success criteria**
•	All the images and data are saved for analysis or to create the lookup table.
**Notes**
•	If the test results are not satisfactory, this activity may be repeated again after making proper countermeasures to reduce the flexure.
**LBTO support**
•	Support from LBTI/LBTO?
**Associated SHARK-NIR personnel**
•	JF, LM, MdP
**Date performed and by whom**