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Hi Cola
with my SW ED80 I have a 1.25 nosepiece that screws to the t-ring , so it can fit into a 5x cheapo barlow
someone might correct me but 2x might'nt be enough
the best are Teleview powermate's . Have a look at Bintels website, but they cost a bit I've never used one
Someone else might be a bit more helpful I don't do a lot of astro photography (AP)
Cheers David
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