Hi,
Try this for a comparison
http://www.telescope-simulator.com/i...d=45&Itemid=57 , lots of things need checking, you should get a colimator (or borrow one) and check adjustment. I seem to remember my 4.5 did show a little deail so a 6 should but it really depends on the quality of the mirror and the eyepieces and then adjustment and the one you cant change "seeing", "seeing" is rarely perfect and you just have to get out there and look
(there are videos on youtube taken through the eyepiece you can have a look at as well but youll have to search)
Roger
where's Suzy shes the 6" expert