Michael:
You don't mention the telescope you are using... It does have some bearing on the situation. I am guessing you have an SCT... If so, I would probably keep the Celestron Prism diagonal simply because prisms are much harder and therefore much easier to clean than mirrors. Dielectric mirrors are quite hard but otherwise one has to take great care in cleaning a mirror. Prisms are like cleaning lenses.
Of course I would keep them both because someday another scope will come along needing a 2 inch diagonal.
jon
You don't mention the telescope you are using... It does have some bearing on the situation. I am guessing you have an SCT... If so, I would probably keep the Celestron Prism diagonal simply because prisms are much harder and therefore much easier to clean than mirrors. Dielectric mirrors are quite hard but otherwise one has to take great care in cleaning a mirror. Prisms are like cleaning lenses.
Of course I would keep them both because someday another scope will come along needing a 2 inch diagonal.
jon
