Hi
I have a refractor Saxon 100ED and my question is
How do I know which diagonal should I get? I see that ther are few diferent sizes and types. Like quartz dielectric or just dielectric, star diagonal, dura bright and so on
At the moment I have Bintel quartz dielectric 2"
Thank you
With the scope you have, that diagonal is really all you need.
In theory a more up-market diagonal would transmit the tiniest bit of extra light, with the tiniest bit less distortion, but to see the effect your telescope would have to be in perfect shape and be using rather expensive eyepieces.
You aren't missing anything with what you have, it probably has a 1.25" adapter so you can use 1.25" eyepieces so you should have all bases covered.