The 2″ extension tube is an ideal problem solver if the focal plane is too far outside. The focuser remains in its optimal position.
Fields of use:
- straight-through observation with refractors (normally, the standard focusers are not long enough for that)
- observation with photo-optimized Newtonians having a longer back focus distance
Technical details:
- precisely CNC machined
- made of aluminum
- brass compression ring prevents your accessories from dents and scratches
- with filter thread at the telescope side
- Optical lengths available:
- 35mm.
- 50mm.
- 80mm.