End cap with M68x1 inner thread for 2.5 inch focus lens | Feather Touch by Starlight

If you attach a flattener, reducer or off-axis guide to your focus ring, you want it to be straight and firmly attached. With this end cap with M68x1 internal thread, you can attach such accessories directly to a 2.5-inch Feather Touch focus ring.

The end cap comes on the output of a 2.5 inch Feather Touch from Starlight Instruments. You will encounter M68x1 a lot. flatteners for astrophotography, reducers, off-axis guiders and camera adapters.

Before ordering, check that the accessory you want to connect has an M68x1 female thread. When photographing, take into account the thickness of the end cap when calculating the distance from the sensor, so that you remain at the correct distance for a flatter or reduced image. A threaded connection is less likely to become crooked than a clamp ring.

If you want to focus on this focal point with a motor, see the MicroTouch motor focus for 2.5 and 3 inch.