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

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

Specifications:
Material: Aluminium Alloy
Color: Black
Caliber Diameter: 1.25in
* Suitable for reflecting telescope
length: Approx. 64 mm / 2.52 in
Diameter: Approx. 35 mm / 1.38 in
Weight: Approx. 92 g
Package List:
1 * Eyepiece