CYCK Newtonian Reflective Optical Axis Terminator Calibration Eyepiece + Screws (for SkyWatcher 2-inch to 1.25-inch Interface)

CYCK Newtonian Reflective Optical Axis Terminator Calibration Eyepiece + Screws (for SkyWatcher 2-inch to 1.25-inch Interface)

Description:
- The so-called terminator is basically able to solve the problem of the Newtonian reflective axis, so it is named: optical axis terminator.

Characteristics:
- The exit pupil distance is more than 20 mm, and can be directly observed and adjusted with glasses.
- There is no trouble of not being able to see the cross focus or main lens mark clearly.
- Error-free design, there is no problem of inaccurate calibration of the eyepiece itself, so there is no need to do self-alignment calibration of the calibration eyepiece itself.
- Basically suitable for all Newtonian reflectors, optimized design for SkyWatcher Newtonian reflector.
- Multifunctional design concept. It is not only an optical axis calibration eyepiece, but also support functional expansion.
- Easy to solve the problems about the height of the secondary lens, focus mount tilt.
- Not only on-axis optical axis calibration, but also surface optical axis calibration.
- Support no main lens center mark calibration.
- Support telescope assembly accuracy calibration.
- Helping to better understand the optical axis.

Package Included:
- 1 x Calibration Eyepiece
- 1 x Pack of Secondary Lens Thumb Screws