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Promiscuous Function
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Non-Amp-Glow for Clean Backgrounds
You can learn more differences between unlocked Bin1 and Bin2 modes by comparing the performance charts
shot by Blake Estes
SV227 2" SII 5nm Filter Narrowband Filter All Sky Camera IMX462 Promiscuous FunctionThe SVBONY SV227 SII filter is a 2 narrowband astrophotography filter with a 5 nm bandwidth, designed to isolate the sulphur II emission line at 672. 4 nm. It is intended for deep sky imaging of emission nebulae, where strong suppression of light pollution and background sky glow is required. 5 nm Narrowband Precision With a narrow 5 nm passband, the SV227 SII filter provides high contrast by isolating the sulphur II emission wavelength while
