文章
由 HK.Raymond.Tse » 週四 07 6月, 2007 20:32
If you are talking about Binoviewer, check Siebert Optics 2-inch mirror type binoviewer. But it will be quite heavy.
Most 1.25-inch Binoviewers will use split-beam prisms but the clear apertures vary from 22mm to 27mm.
Raymond