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Originally Posted by [1ponders]
You probably won't see much difference between them during daylight hours Daniel. Unless its a particularly bad scope, (ie. my old 60mm tasco with the click out zoom eyepiece), or you now what specifically to look for. It's when you put it to the test under night skies of extreme contrast of star/planet/moon and night sky that any chromatic aberation will become obvious.
FWIW IMHO unless you are only going to use if for viewing or autoguiding I would definately get the Orion/Saxon/Skywatcher ED80 over the 80 express. Yes it (80 Express) is a more compact design and the overall look, size and build is better, but in the long run it comes down to the quality of the optics and the ED 80 will leave it for dead in imaging.
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Yes Mr Ponders is quite correct! Go the ED80 and get the case!
Also remember you have to buy a diagonal, they dont come with one, and maybe a red dot finder or telrad or similar as there is no guide scope. Now I am not sure but myastroshop has removed their ed80 special price, might have to shop around for price!