2: The Eyepiece page - Cyrille-de-Brebisson/CBScope GitHub Wiki

This page lets you specify your eyepieces.

Press on the “New eyepiece” to create a new eyepiece and fill up the name, focal and angle. All the rest will be auto calculated. Press on the “Delete” button to delete an EP.

You will see the zoom factor, the eyepiece real view angle as well as the field radius (see Secondary page for more info there) and the exit pupil.