About the Lunt Solar Systems 12mm Solar Eyepiece - 1.25"... The Lunt Solar Eyepiece series are coated with the same 0.1% anti-reflective coatings as on their h-alpha etalons. The anti-reflective coatings reduce ghosting and glow and aid in providing darker background. They also excel at lunar and planetary viewing - as well as terrestrial objects. Lunt Solar Eyepieces have other great features as well, such as a safety groove cut in the barrel to help stop eyepieces from accidentally falling out of the focuser, rubber eyecups to help prevent stray light, gnurled grip rings and an attractive flat black design. What'''s more, Lunt Solar Eyepieces provide comfortable eye relief at all focal lengths in a five-element design. They also feature a very generous field of view. It'''s an all around performer! Safety Note: These are eyepieces only and must be combined with a safe solar filter for viewing the Sun! Lunt Solar Systems 12mm Solar Eyepiece - 1.25" Features... Coated with the same 0.1% anti-reflective coatings as on the Lunt h-alpha etalons Fits all standard 1.25" focusers and adapters Anti-reflective coatings reduce ghosting and glow and aid in providing darker background Comfortable eye relief Excellent 60 degree field of view Superb at lunar and planetary viewing - as well as terrestrial objects Lunt Solar Systems 12mm Solar Eyepiece - 1.25" Specifications... Eyepiece Type: Enhanced for Solar Viewing Focal Length: 12mm Barrel Size: 1.25" Field of View: 60 Degrees Eye Relief: 11mm # of Elements: 5 Weight: 4 oz. Lunt Product Number: LS12E
