Phil, which S5000 did you order? re barlows... I'd recommend either the Orion Shorty Plus or the Celestron Ultima (both the same, apparently). They're 3 element jobs, full aperture and reasonably priced. I've only got a 'generic' shorty 'non-plus' (2 elements) and I figure it'll be fine for the lpi, though for visual stuff I'd go for the 'plus' or 'ultima'.
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