This is as low as I am going on this fine scope. Zeiss Jena objective adapted to 4" fully baffled Celestron tube. Has a 2" Burgess Optical focuser which has a 1.25" adapter and is super smooth. You will not find another scope of this aperture that has finer performance. OTA, rings, rails, and a finder are included. The attached images of the bird, and moon were digiscoped with this scope.