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Originally Posted by ausastronomer
Stu,
If you liked the 5" APO over the 18" Obsession 1 of 2 conditions must exist 
1) the Obsession has a pretty average mirror in it.
2) you have far different observing preferences to me
The visible detail and resolving power of a 5" telescope is not even in the ball park with an 18" telescope. Yup it will give nicer star images but thats about it.
CS-John B |
Had to jump in here. John, Stu is fairly new to the hobby.
He is fairly impressed with all high end scopes. I think what he is saying that the views through the Apo's are very sharp as they would be.
But he has not looked through the 18" very much. Once or twice at most.
If I remember we have not viewed the planets when Stu has been down for a look.
I have looked through the 18" many times and it blows away the apo's no ?
The mirror is spot on. The size of the thing means it does not get as much use as it should.
The 18" is the best scope I have ever looked through.
But I do love the 5" Tak. I see where Stu is coming from. He likes pinpoint stars and viewing the Planets etc. Not that the 18" is not upto it. We could go on about that forever. But the little Apo's where Stu is concerned would get much more use than a big 18"
Hope that clears it up a bit John.