SV227 2" SII 5nm Filter Narrowband Filter sv205 camera dark current and defect pixels

dark current and defect pixels compared to the conventional front-illuminated structure

The f/6 focal ratio strikes a perfect balance between wide-field views and resolving fine details

An included external temperature and humidity sensor provides continuous monitoring of relative humidity

SV28 Spotting Scope come with tripod

a high-precision astrophotography accessory designed to elevate your imaging experience

SV227 2" SII 5nm Filter Narrowband Filter sv205 camera dark current and defect pixelsThe 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