Reduce light pollution; SV220 telescope filter can greatly reduce the interference from natural light sources such as moonlight or artificial light pollution such as street lighting
Astrophotographic;the filter enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; the filter allows high-contrast imaging even in areas with strong light pollution
Improving contrast; an increase in contrast can be perceived as an increase in brightness; the filter makes the contrast of the nebula and sky background increase; not the nebula brighter
SV220 2'' Dual Narrow bandwidth SII/O-III 7nm narrowband filter properly designed for astrophotography both in light polluted
Allows for imaging in bright man-made light pollution and moonlit conditions; Useful for imaging emission nebulae; planetary nebulae and supernova remnants
وصف
The SV220 dual-band filter is designed for astrophotography of emission nebulae, planetary nebulae and supernova remnants. The high transmission and sharp cut-off greatly enhances the contrast of image and brings out the most detailed information of those deep-sky objects. The 7nm dual-band filter allows OIII (500.7nm) and H-Alpha (656.3nm) nebula emission lines to be highly transparent, strongly isolates the nebulae's emissions into H-Alpha (red) and OIII (green-blue), and drastically reduces the effect of light pollution. Designed for OSC cameras, SVBONY SV220 7nm dual narrowband filter cuts through urban glow and moonlight to deliver high-contrast images of nebulae. Its sharp cut-off and high transmission provide exceptional detail in a single shot, streamlining your astrophotography process. SV220 SII & OIII Filter can unlocks the SII (672nm) and OIII (500.7nm) emission lines while rejecting the broad spectrum of background light; it delivers exceptional contrast and cuts through light pollution.