For 2-inch focusers with T-Thread adapter - takes 1.25-inch eyepieces
Renowned Vixen high quality Flip Mirror is a photo/visual accessory that slides into 2" focusers and allows flipping image between two 1.25" eyepieces or unscrew either 1.25" adapter to attach a T-thread ready camera. Can also be fitted with #2680 42mm to 2-inch adaptor.
The basic function of a flip-mirror system is to allow the observer to inspect, centre, focus and compose the telescope image with an eyepiece before the film or CCD image is taken. This eliminates tedious CCD composing and focusing that requires taking short exposures with the CCD camera after each small focus change and examining the result on the computer screen.
A great tool also for centring planets in a narrow field of view when using high magnifications.