I think barlowing a 32mm ep is sort of defeating the purpose of such an ep', which is widefield, low power viewing. However, it can give you that extra bit of oomph by bringing things a little closer than usual.
Although, on your stock standard 6-8" newt (at f4.5-6), you're going to get X42 -X80 mag with a barlowed 32mm, which is the same as sticking a 15-16mm ep straight into the focuser. Means one less ep to buy.
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