Introducing our combined dew shield extender and 77mm objective lens filter holder for the SW72ED (must be the version with the threaded dew shield).
The adapter can be left in place as the 72ED dew shield simply screws onto the top of it and as the adapter has a 77mm aperture it is non-blocking with no vigneting.
Compatible Model: Skywatcher 72ED with threaded dew shield
