The 2" Rear Port Adapter threads onto the rear port of Meade and Celestron SCT telescopes and allows you to view or image straight through the scope using any 2" accessory
This adapter ring will thread onto the rear photo port of any Meade ETX60, ETX70 or ETX80 Telescope and will convert the odd 34mm thread to a standard 42mm "T" Thread. Just add a T-Ring for your brand of camera and you are set to take photos.
This Visual Back threads onto the photo port of the ETX-90/105/125 or other scopes having a 34.6mm rear port thread and allows you to view or image straight through the scope using 1.25" accessories. The Visual Back has a standard 1.25" eyepiece port on the back end.