Founder Optics 2" Dual Threaded Adapter for Field Flattener - DTA-FF2 Mirror Diagonals Includes 3-element focal reducer and

Includes 3-element focal reducer and spacers to configure as a 6-element f/4

Celestron C11-A XLT Schmidt-Cassegrain OTA - 11" SCT Optical Tube Assembly Features

Losmandy/Vixen saddle

Eye Relief: 5mm

Rough focus is achieved by sliding the eyepiece in the diagonal

Founder Optics 2" Dual Threaded Adapter for Field Flattener - DTA-FF2 Mirror Diagonals Includes 3-element focal reducer andThis heavy duty dual threaded 2" adapter is designed to attach the Founder Optics field flattener to telescopes with a 2" focuser. When doing astrophotography it is important to keep the optical chain as tight and aligned as possible. This adapter uses threads instead of screws or tension adapters for the mechanical connection, which reduces the possibility of a gap or flexing in your optical chain. Paying attention to the quality of your adapters