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75rem auto
It is nitrogen-filled
dark current and defect pixels compared to the conventional front-illuminated structure
stored and transferred with fewer devices attached to the telescope
SV227 2" SII 5nm Filter Narrowband Filter sv205 camera 75rem autoThe 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
