A wedge is required for the parallactic operation of a telescope that is mounted in a fork or single-arm mount. The cradle is inserted between the tripod and the mount. By adjusting the polar cradle to the latitude of the observation site, the azimuthal axis is tilted so that it is parallel to the earth's axis. Thus the polar cradle transforms the azimuthal mount into a parallactic one. In this way, long time exposed images are now possible, since parallactic mounts do not rotate the image field. This pole height cradle is suitable for the Celestron telescopes NexStar SE 6/8 and NexStar Evolution 6/8/925. Use without tools, can be easily adjusted even under load Modern, stable and portable design Robust latitude adjustment with easy to read scale and integrated spirit level The manual control of your NexStar telescope already has the option of parallactic operation. No additional software update is required.