widefield ep's for binoviewer

[sunshine185]

What is the lowest power ep I could use on a wo binoviewer? I currently have the two 20mm and I also have two skywatcher super 25mm's. Could a pair of 30mm plossls work our maybe something in the region of 26mm but with a wider fov than the 52 degrees that the sw 25mm give.

[DOBBY]

in binoviewers you don't want to go too wide... 60 deg is ideal... 65 is a max

so some plossls are ok & as you need to get 2 at a time...affordable

Celestron 25mm X-Cel LX eyepiece 1.25" these would seem perfect...other than the cost