Takahashi - Takahashi TFP0090 Star Diagonal

    * Perfect accessory for Schmidt Cassegrain, Maksutov and Refractor telescopes.
    * The Takahashi TFP0090 Star Diagonal uses a high quality prism - not a mirror.
    * Multi-coated entry and exit prism faces for minimum light loss.
    * The Takahashi TFP0090 Star Diagonal has 100% internal reflectivity.
    * Works with all 1.25" focuser and 1.25" eyepieces.
    * The Takahashi TFP0090 Star Diagonal utilizes a unique compression ring that won't mar the eyepiece finish.
    * Weighs 3 ounces.
    * Five Year Manufacturer Warranty. 

Let's talk quality here. The Takahashi 1.25" star diagonal uses a high quality prism instead of a mirror. This means a lifetime
of service where the coatings won't erode. The prism inside the Takahashi star diagonal returns 100% internal reflectivity and
what's more, the exit and entry surfaces of the prism are multi-coated for minimum light loss. Don't settle for less.

To protect the barrels of your good eyepieces, Takahashi has designed its star diagonal with a non-marring molded compression
ring to hold the eyepiece in place. How many times has a set screw scratched the barrel or become lost in the dark? Not any more.
The compression ring is tightened by a ribbed thread-on grip around the eyepiece which simply turns to tighten its hold on your
precision cargo. Step up to one of the best!