Is there at all a difference with what you see through say, a 6mm eyepiece with a 2X barlow, and a 3mm eyepiece? Im starting to think of investing more into astronomy.
Is this barlow a good quality one?
http://www.myastroshop.com/products/...asp?id=MAS-129
It seems cheaper than a couple of the others have there, why would it cost so much less?