I bought a refractor last month (I wanted to buy it in September because it is so cold now but it was on sale...) I bought is because they say refractors are better at producing sharper images, so they are particularly good for moon and planetary viewing. In my case I was not able to use prime focus with my dob because of its focusser, but it works well with the refractor, except that there is not much to see... Dobs are better for wide-field viewing. I don't know much about reflectors that are not dobs...
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