Further comment.
I wouldm't worry about a barlow as Brent said. I had a Televue one for quite a while. Ended up selling it as it just wasn't being used. The view was always noticeably better without it.
If thinking of a 6mm, if going a plossl they have a really small lense that can make getting a view really hard. And in a scope that size they give 167x which is really pushing an 8" scope unless sky conditions are just about perfect. When I had an 8" dob, even the 10mm was pishing it at 100x.
Try and use low power as much as possible to start off, view are usually better and there is heaps to see at those powers.
Malcolm
|