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Oh, I nearly forgot!
I also had a PST for a short period at the same time as I had the Quark. I got the PST after the Quark. While the PST was better in showing chromosphere details, the Quark still showed the same details but it took a bit more effort. The larger aperture that the ED80 afforded also stomped on the 40mm's of the PST...
As an outreach instrument a dedicated H-alpha scope I certainly say is better as a Quark does need a more experienced eye. Still useable for outreach the Quark is, but really best for when the Sun is at its Maxima with big proms.
Alex.
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