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979 zł
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price without VAT: 795,93 zł
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 Shop online:
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Shop in Warsaw (qty):
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Shop in Chorzow (qty):
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The Astronomik SII 6nm CCD filter is a professional narrowband filter, dedicated to astrophotography of nebulae emitting light in the sulfur lines (671.7 nm and 673 nm). Thanks to high transmission and a very narrow passband, it greatly increases the contrast of objects in relation to the sky background - even in high light conditions. The 6nm version with MFR (Multi-Frequency Resistant) coating effectively blocks unwanted radiation from UV to IR, eliminating the influence of sodium and mercury lamps, moonlight and airglow. Ideal for users of low dark current cameras and for working in urban conditions. Used together with H-alpha and OIII filters allows you to create color images in the Hubble palette (HSO). • type: SII CCD filter, narrowband
• diameter: 27 mm
• assembly: without frame (unmounted)
• bandwidth: 6 nm
• central wavelengths: 671.7 nm and 673.0 nm
• typical transmission: 93%
• guaranteed transmission: >90%
• glass thickness: 1 mm
• optical compatibility: for systems with a focal ratio of f/4 to f/∞
• Cover: MFR (Multi-Frequency Resistant)
• other features: scratch and moisture resistant coating, parfocal filter
• SKU: 10216627 / 8h00mm
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