The VITE eyepieces can be bought in 3 piece sets (23mm, 10mm and 4mm) for about $25.00. The eyepieces themselves are aspheric designs with 60 deg. fields of view. I compared the 23mm to a 25mm "ED" (BST type) eyepiece, a 26mm Meade Super Plossl and a 24mm Vernonscope Brandon eyepiece. I used an 80mm f/6.0 triplet apo which presents a fairly strong test for eyepieces. Now, forget "across the field." None of they eyepieces mentioned are good at that in such a fast scope. They all have issue with edge of field views, the VITE's being the worst, it needs a long focal length scope like an SCT or a Mak or a long refractor. But, centrally, the VITE easily bested the other eyepieces. I used them on the Moon, Jupiter and in daylight. Details that escaped the others were visible in the VITE in the centre of the field. In addition, the view in the VITE was brighter than any of the other eyepieces. The Brandon was the least-bright, likely because of its old single-layer mag-fluoride coatings. The Brandon dates from the 1980's. The reason the VITE beat the others could be due to a number of possible technical attributes. Plastic elements. I believe the eye lens is at least part plastic and anything aspheric that is that inexpensive must have a molded plastic element. Molded plastic has one major plus and that is that the surface of the plastic is essentially perfect. There is no "scratch and dig" profile because the plastic isn't polished, it's melted and allowed to harden instead. Another reason for the definition might be fewer elements to degrade contrast. Whatever the reason, the view was great. In-fact, if you cut-off the VITE's FOV and cut it down to 20 degrees, it would be a worthy successor to the now defunct monocentric and other hyper-simplified designs for planetary definition.
From left to right in the image: The ED 25mm, the VITE, the Meade SP and the Brandon.
Edited by RichA, 23 May 2020 - 09:50 PM.