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Sirius Contrast Enhancement Eyepiece Filter CE-1.This is the Sirius Optics version of an LPR filter. LPR filters in common...
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£50.00 @ Warehouse Express
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Sirius Optics have produced this specialised corrective filter that greatly reduces the false colour fringing of blue-violet...
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£50.00 @ Warehouse Express
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The Sirius Minus Violet Eyepiece Filter MV20 is a specialised corrective filter that greatly reduces the false colour fringing...
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£50.00 @ Warehouse Express
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Sirius Nebula Eyepiece Filter.This Nebula Filter is similar to the filters presently available. The effects of light pollution...
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£50.00 @ Warehouse Express
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Sirius Planetary Contrast Eyepiece Filter PC1.The Planetary filter has three peaks of high transmissions with the regions...
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£50.00 @ Warehouse Express
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