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As I have said before, I like to do these comparisons to gauge the success (or lack of) of my images in revealing faint extended stuff not usually revealed and/or to make it more obvious what I have indeed captured. The original amplified UK Schmidt plate data would look amazing under a micro viewer, what David posted on the web back in 2004 when he did these high contrast repros of the UK Schmidt plate works, were rather small jpegs and the incredible resolution of the original plates is lost (ala most Hubble shots posted on the web) but the extent of the faint material visible is still well represented and not affected by the resolution loss.
Mike
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