im with you on that one john, i have a fast newt 4.7, when i insert a 2x ed barlow with my photos it almost flattens the image out with only slight flaring at the edges compared to comets in the normal. Have you considered a MPCC..?? they seem to work splendedly for my newt though not so good with the barlow but refer to my first point! a TVPC is what close to 400 a MPCC with all spacers in the kit is 250? easy choice
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