Thanks very much for that response...yes, seems as though there are many variables with refractors! I certainly (at this stage anyway) am not interested in photography (my daughter did snap a few very good photos of the moon through the eyepiece of my Dob however!); I just like studying planets and deep space objects...I guess my confusion is that if it's 8" of Dob apeture vs, say, 5" in a large refractor, how can the refractor give a better view (again; no photography here, just straight viewing) when the Dob is receiving so much more light? All a learning curve...but I am keen!
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