Can eyepiece filters be used with the Regal spotting scopes?

No, not with the zoom eyepiece on the scope, since it is not threaded to accept filters.

If you use other eyepieces that can take filters with your Regal, please be aware that the filter-eyepiece combination may push the eyepiece’s plane of focus far enough away from the body of the spotting scope that you won’t be able to focus at infinity because of the Regal’s small back focus.

Updated 12/18/13