Hi
I have a Celestron zoom, and it find very nice indeed. I expect the Baader will be better.
Having said that, I was interested in knowing if my stock diagonal was much good. So I tried looking at some stars without using it, just the eyepiece. By eye, it seemed to me that I was getting signifantly more light and a sharper view with just the eyepiece. Hard to judge mind you, but, I thought at least 10% brighter, probably more.
You may be able to try this as well.
So I have just bought a diaelectric mirror and it is brilliant, from the one short look I have had at stars so far. I went for a Williams Optics one.
My suggestion to you, if you have to choose between the zoom and diagonal, is get the diagonal to make the most of the eyepieces you currently have.
Have fun
Philip
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