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Spiral Symmetry of NGC 3486

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Chroma Sii, 31mm, unmounted, 5nm - Reduced!

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I'm the original owner of the filter. It's in mint condition with all original packages.
I changed to a 3nm version to tackle the light pollution from my backyard. The difference is slight.
If you buy new it costs $460.
The price includes free shipping to CONUS. Thanks for looking.