Category Archives: Diagonals and Prisms

The Lumicon 2 Enhanced Aluminum Diagonal reflects 96 to 97 percent of the light from the telescope’s primary optics directly into your eyepiece. Its single 1/8 wave precision-polished surface is superior to the three surfaces of prism diagonals. Lumicon collimates each diagonal mirror via a double-pass collimator ensuring that the light reflected from the diagonal … Continue reading

The Lumicon 1.25 Enhanced Aluminum Diagonal reflects 96 to 97 percent of the light from the telescope’s primary optics directly into your eyepiece. Its single 1/8 wave precision-polished surface is superior to the three surfaces of prism diagonals. Lumicon collimates each diagonal mirror via a double-pass collimator ensuring that the light reflected from the diagonal … Continue reading

Item no. LUMI135 – Lumicon – mpn no. LD1005 List Price: $135.00Sale Price: $99.99

Celestron 2 Inch Diagonal with XLT Coatings for SCT Telescopes Introducing our new 2 XLT Diagonal. This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2 eyepieces. Featuring our premier StarBright XLT coatings this unit has an interferometer tested 10th wave flat mirror.This premium diagonal … Continue reading

View in comfort!Celestron’s star diagonal keeps your knees clean. It lets you view objects at a 90-degree angle to the direction the telescope is pointing. That means you don’t have to grovel in the dirt to view objects overhead! Celestron’s 90-degree star diagonal: it’s a clear investment in viewing comfort! Note: objects viewed through the … Continue reading

Get Stellar land views! Celestron’s #94112A erect-image diagonal offers out-of-this-world views of land objects. It features an Amici prism design that allows you to look into the telescope at a comfortable 45-degree angle at images that are oriented properly – right-side-up and non-mirrored. The Celestron #94112A erect-image diagonal: it brings stellar views down to earth! … Continue reading

Baader Planetarium 2 Inch Dielectric Diagonal With their ground-breaking introduction several years ago of the all-dielectric 2 Dielectic star diagonal Baader Planetarium brought mirror star diagonals into the 21st century. The new 2 Clicklock Star Diagonal takes this innovation another step further. Like its predecessor the 2 Clicklock Star Diagonal uses the proprietary Baader Dielectric … Continue reading