The quality of this focuser comes close to the well-known Feather Touch focusers from Starlight Instruments. The large focuser allows even using full-frame size and medium-format cameras without vignetting, of course with suitable correctors.
The focuser is attached to every telescope near the focal point of the light-gathering optics. As the name suggests, eyepieces can be inserted into the focuser. For astrophotography, focusers hold cameras and bring them into focus. This is why they are also referred to as focusers instead of eyepiece focusers.
TS Optics is a brand of Teleskop-Service.
