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Even though I'm not deeply impressed by the colour correction of this 127 semi APO, but I prefer a refractor to a comparably-sized reflector of any kind. Can't match the contrast, sharpness & image crispness of a refractor plus I'm not a big fan of diffraction spikes.
It's actually quite a pain getting the focus on that 127mm ABSOLUTELY spot on to get rid of the false colour, and the focuser itself isn't very smooth. Even the el-cheapo GSO Crayford 1:10 works better.
I might sell my 127mm if you're interested since I bought it last month just out of curiosity.
Last edited by toyos; 24-07-2008 at 09:49 AM.
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