Anybody tried these in the William Optics binoviewers? Do they vignette a lot? or is vignetting not an issue? I have a pair of 20mm 66 deg eyepieces for binoviewing, and I am looking for a lower power pair, but with a wider AFOV than 52 degrees.
The 20mm 66 deg eyepieces have a 23.0mm field stop diameter and vignetting is so minimal that it is not an issue. The 27mm pair above in the link have a 24.4mm field stop diameter.
Edited by Miranda2525, 15 May 2019 - 06:34 PM.