Starlight Instruments 3.0" End Cap - M68x1(F)

This end cap is designed to connect imaging accessories that have a male M68x1 thread directly to a Starlight Instruments 3.0" Feather Touch focuser. It replaces the focuser's standard 2" compression ring end cap to create a more rigid, secure connection for cameras, field flatteners, and reducers.

This end cap is specifically designed for the Starlight Instruments 3.0" and True 3.0" Feather Touch focuser series (models starting with FTF30xx and FTF32xx). It is not compatible with 2.0", 2.5", or 3.5" Feather Touch models.

You would first unthread the existing end cap from your 3.0" Feather Touch focuser's drawtube. Then, you simply thread this M68x1 End Cap on in its place. This gives you the female M68x1 thread needed to directly attach a corrector, such as certain Riccardi or other brand reducers, ensuring perfect alignment and rigidity in your imaging setup.

It depends on your specific adapter chain. Most ZWO cameras use M42 or M54 threads. To use this M68x1 end cap, you would need an additional adapter that steps down from the male M68x1 thread on your flattener or OAG to the required thread on your camera. This end cap provides the secure starting point for building that adapter train.

This end cap is machined from high-quality aluminum. Starlight Instruments uses metal for all structural components to ensure maximum rigidity, durability, and a precise fit, eliminating any flexure in the optical train.

No, this end cap is not compatible with 2.5" Feather Touch focusers. The drawtube threading is different. You must use an end cap specifically designed for the 2.5" focuser body to ensure a proper and secure fit.