This Lunt Solar Systems eyepiece with 27mm focal length is coated with the same 0.1% anti-reflective coatings as on the Etalons. These anti-reflective coatings reduce ghosting and glow, and aid in providing darker background.
The 27mm eyepiece provide a 53 degrees field of view, and 18mm eye relief. It has a very nice height adjustable eyeguard to protect your eye against day light reflections and to help you to find the perfect eye position.
Given the optimization in the red end of the spectrum, LUNT eyepieces will also work very well for night time observing.