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Filters
Hi all,
Just thinking about light pollution etc and have heard/read about LP filters but can't seem to find anywhere selling them as such. What sort of filters are they? Are they any good?
Also with the terrific M42 about again what would be a good filter for nebulae? I've heard of UHC and OIII but don't know what they (or any) filters do/are good for. Also would they work OK in my little 130p? What sort of difference would they make?
Cheers!
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