SV227 2" H-Alpha 5nm Filter Narrowband Filter Plug and Play HDMI The base set includes the

The base set includes the drawer frame

making it ideal for both night sky and solar observation

sensitive to vignetting

With degree markings

SV227 2" H-Alpha 5nm Filter Narrowband Filter Plug and Play HDMI The base set includes theThe SVBONY SV227 is a 2 H alpha narrowband filter with a 5 nm bandwidth, designed for deep sky astrophotography. It isolates the hydrogen alpha emission line at 656. 3 nm, making it well suited for imaging emission nebulae while strongly suppressing light pollution and unwanted sky glow. 5 nm Narrowband Precision With a narrow 5 nm passband, the SV227 provides strong contrast enhancement for hydrogen alpha emission while rejecting surrounding