Please adjust the screws if it is not in the center, in this way, you will collimate sucessfully. .; Make sure the black spot is in the center of 2 lines of collimation eyepiece.; Used to calibrate the optical axis of a reflector, put the collimation eyepiecre into the tube.; 1.25 inch calibration eyepiece is of short size, made from aluminum alloy and finished by CNC manufacturing.; A wonderful accessory for both photography and astronomy lovers.
What's in the box
1 x Binocular & Monocular Accessories
