Takahashi Collimating eyepiece TKA00441

The Takahashi TCE0020 is a collimating eyepiece used to collimate Newtonian and Cassegrain telescopes.The Takahashi TCE0020 is a short body Cheshire-type collimating eyepiece used to collimate Newtonian and Cassegrain telescopes. The TCE0020 has a precisely centered sighting hole with a cutout in the side of the tube containing a 45° angle matte silver reflecting surface.. It is also often used with a Takahashi TCE0030 collimating tube, which provides crosshairs for more easily collimating Newtonian reflectors.