Used Tele Vue 5mm Nagler Type 6

This eyepiece offers a wide, sharp 82° apparent field for astronomical viewing, enhancing the visual experience compared to shorter fields.

• The description claims the eyepiece provides an 82° apparent field, nearly three times the area of a 50° field.
• The description claims full field image quality is emphasized over just showing a field.
• The description claims 100% full field visual inspection is guaranteed using their own test instruments.