This adapter allows you to connect the ESATTO 3.5" LP focuser to the M117 thread of GSO/Orion/TPO Ritchey-Chretien 10", 12", 14" and 16" telescopes (both aluminium and carbon tubes). Optical thickness is just 3mm.
By using the standard extensions that come with the telescope you can install the focuser at a precise distance from the OTA. Additional extenders may be required to reach focus with your camera, depending on the accessories you wish to connect.
