Eyepiece 10mm 1.25"

Specifies the product's connection or connection thread on the telescope connection end. The same adapter dimension must always be available on the telescope.

A standard measurement for accessories, expressed as 1.25 inches. 1.25" is equal to 31.8 millimetres.

Is the distance between the eyepiece and eye, within which the entire eyepiece field of view can still be seen. Longer eye reliefs are recommended for relaxed observing.

Used to connect a filter to the accessory.

Eyepieces with an apparent field of view of between 70° and 100°.