5 Matching Products
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The Sirius Minus Violet Eyepiece Filter MV20 is a specialised corrective filter that greatly reduces the false colour fringing of blue-violet light.
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Sirius Planetary Contrast Eyepiece Filter PC1.
The Planetary filter has three peaks of high transmissions with the regions in between being heavily rejected.
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Sirius Nebula Eyepiece Filter.
This Nebula Filter is similar to the filters presently available. The effects of light pollution will be greatly reduced, improving contrast and visibility of emission nebula.
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Sirius Optics have produced this specialised corrective filter that greatly reduces the false colour fringing of blue-violet light. This halo effect is most noticeable in relatively low cost achromatic refractor telescopes.
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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 use are a variation of the O-III and Nebula filters and work by reducing the effects of light pollution, but at a cost of overall
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5 Matching Products
Displaying Page 1 of 1 | | << Previous | | | 1 | | Next >> |