Tele Vue 2" Everbrite Diagonal with 2" to 1.25" AdapterDescription The Tele Vue Everbrite 90 Degree 2" Diagonal is the way to go if you want one of the best telescope accessories money can buy! Here's why: The Tele Vue Everbrite has a Pyrex mirror with 1 10th wave accuracy Dielectric, non metallic coatings have 99% reflectivity across the visible spectrum Resulting images through this diagonal are brighter and "whiter" The Everbrite's body is machined from one solid block of aluminum for permanent