Mechanical collimation

	The focuser is squared to the secondary cage with the help of a laser pointer and a small mark placed exactly opposite to the focuser. While performing this task, the secondary holder is removed.
	All the surfaces are leveled (primary box and secondary cage).
	A thread is passed exactly in the middle of the spider.
	A counterweight is used to center the secondary cage.
	When the counterweight is dead-centered, the mechanical collimation is completed.