Got my SW Skymax Pro 180 Mak a couple of days ago, been waiting for it since mid January. Been watching loads of stuff on it beforehand and decided to get the SW 2" dual Crayford focuser as per Dions video, didn't need the adaptor as it all comes with a 2" SCT thread on the visual back these days. It might be a 2" SCT thread, and they do supply a 2" diagonal, but the actual aperture is still 1.25"! Now I know it is a planetary/lunar scope and that's what I bought it for, but why put a 2" visual back on it if you only need a narrow field to do lunar/planetary and more to the point why increase it from 1.25" to 2" ? Second issue, when using an Explore Scientific 2" 24mm, 32mm & 40mm to see what happened I was getting an orange ring around the entire edge of the fov? The only 2" that didn't was the 18mm . so why make it 2" if it does this? Also tried the same eps with the original SW 2" visual back and they did the same? Can someone give me a heads up on why or is it simply that these 2" eps are simply too big for the smaller 1.25" visual back aperture and if so why supply a 2" diagonal?