Hi there.
I am thinking of buying this DGM NPB filter. Its only $75 and from what I have read on the forum it comes very highly regarded. Is there any reason why this would not be suitable for a 6 inch dob.(because of the aperture) Also I will unfortunately be using it with my cheap EP's that came with it. Is it still likely to be effective?
Thanks in advance.
http://www.ebay.com/itm/NPB-1-25-DGM...item257f183e92