Astronomical Telescope Collimation Eyepiece,Professional 1.25 inch,Short Paragraph Optical Axis Alignment Eyepiece for Photography,Astronomy,Refracting Telescope

• 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 refractor, put the collimation eyepiecre into the tube. • Make 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:
Condition: Brand New
Material: Aluminium Alloy
Color: Black
Caliber Diameter: 1.25in  
* Suitable for refracting telescope
length: Approx. 64 mm / 2.52 in
Diameter: Approx. 35 mm / 1.38 in
Weight: Approx. 92 g

Package List:
1 * Eyepiece