CactEye is a plugin and set of parts that allow for modular orbital telescopes. CactEye telescopes feature a fully-functional science system, and are upgradeable/serviceable (primarily through Kerbal Attachment System). Orbital telescopes also now become fundamental to discovering asteroids. Parts CactEye Optical System (left) The main part of the telescope; optical systems are the actual telescope part of the telescope.   This optics system comes with an apertur