There are 2 series of new Digital Camera Adapters from TeleVue; Both are available to fit the 28mm, 37mm, or 49mm filter threads of many common digital cameras. Photo dealers have step rings to go to other sizes.
DRA xxx series is for the TeleVue Radian Eyepieces and contains a DEC xxx top ring that also fits the TeleVue 24, 31, 35, 27 Panoptic in addition to the 32, and 40 Plossls. Also fits all Nagler Type 4''''s''.
First you remove the rubber eyeguard. The top ring goes onto the groove and locks w/ three set screws. The eyepiece goes onto the lower portion with the instajust all the way down and is locked tight w/ the set screws. The lower portion is 2" diam. and can ONLY work on 2" focusers.
DEC xxx (top ring only) series is for use w/ the TeleVue 35, 27 Panoptic, 32, and 40 Plossls ONLY. They are only a ring that again attaches to the groove at the top of the eyepiece. That''''s'' all there is to it. The eyepiece then goes into the eyepiece holder. The 32 and 40 Plossls can be used w/ 1.25" focusers.