A Star Diagonal lets you view objects that are at a 90° angle from the direction the telescope is pointing, thereby allowing comfortable viewing when the telescope is pointed at, or near, the zenith (i.e. directly overhead).
- Fits telescopes with 1.25'' focusers or visual backs, 90º viewing angle, best for observing objects overhead.
- Accepts standard 1.25'' eyepieces, Barlow lenses, and other accessories with a 1.25'' insert barrel.
Filed under: Eyepieces & Accessories