Star Diagonal Service LifePosted By Mark Costello III |
Hi all,
I've had an enhanced star diagonal for almost six years that I've used for about 600-900 hours. Having recalled reading a post here that enhanced star diagonals will degrade over time, I'm wondering if it's time to replace it. If its reflectivity out of the box was 98% (it's a 2004 William Optics 2" diagonal), how long would it take for it to deteriorate to a reflectivity of less than 87%?
If I have to replace it, I'll do it with a dielectric star diagonal which I understand won't deteriorate significantly over time. Is this correct?
Thanks in advance for your responses and advice.
Mark Costello
Matthews, NC
I've had an enhanced star diagonal for almost six years that I've used for about 600-900 hours. Having recalled reading a post here that enhanced star diagonals will degrade over time, I'm wondering if it's time to replace it. If its reflectivity out of the box was 98% (it's a 2004 William Optics 2" diagonal), how long would it take for it to deteriorate to a reflectivity of less than 87%?
If I have to replace it, I'll do it with a dielectric star diagonal which I understand won't deteriorate significantly over time. Is this correct?
Thanks in advance for your responses and advice.
Mark Costello
Matthews, NC