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IDAS Light Pollution Suppression Filters - V4 Nebular Filter. LPS-V4 filter for Canon APS-C frame camera [HU-LPS-V4-EOS] - V4 Series - O'Telescope
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Astronomik UHC or IDAS V4 - DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging - Cloudy Nights
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NGC 7000 - North America and IC 5070 - Pelican Nebulae (IDAS LPS V4, Theli) ( Martin Junius ) - AstroBin
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