Spectrum Telescope Telescopes that fit this Filter size: Celestron 80 (old); Meade DS-70, ETX-80 AT-TC, DS 2080; Orion: ShortTube 80, Observer 70, Astroview 80/90, Explorer 80/90; Takahashi SKY 9011; Vixen: ED80sf, ED100sf; Swarovski: AT80, STS 80 &
