We are not accepting orders at this time. Online ordering will resume Monday, May 28th at 9:45PM EDT. Our SuperStore and offices are currently closed and will reopen on Tuesday, May 29th at 9:00AM EDT.
We apologize for any inconvenience and appreciate your patronage.
The visual back comes standard with most Schmidt-Cassegrain telescopes of 5.0" to 8.0" diameters. It screws on to the rear threading to reduce the cavity to take accessories of 1.25", such as star diagonals and tele extenders.