This superb range of Adler eyepieces are already well known as the popular Williams Optics Swan series. Only these eyepieces are made in the same factory and enjoy an introductory discount that, for the time being, make them a lot cheaper than the WO branded versions.

Well engineered and powerful short focal length eyepiece offers high magnification and super wide angle views with all popular types of astro telescope.

The long eye relief and fold down eyecup make it comfortable for spectacle wearers.

* Five element design.

* Wide 60 degree appearant field of view

* Multi-coated and edge-blackened optics for high contrast views

* Top quality all metal construction with handsome hard black anodised nosepiece.