1.25'' Multi-Narrowband Filter for Urban Astrophotography

Cut-off depth ≥OD4: Highly efficient in blocking urban light pollution or other background light;
Photoing more kinds of targets: SV240 multi-narrowband filter select Ha,OIII,H-Beta wavelength effectively can cover almost photoing needs;
High transmittance: The >90% transmittance in core wavelength of Ha,OIII, H-Beta, more objects for your astrophotography by using this multi-bandpass filter;
Multi-bandpass filters: Without multiple filters' combination for colorful images;
Resistant of BORTLE 8: the multi-narrowband filters can be resistant from Bortle 1 to Bortle 8 cities, suitable for almost all urban.
Note: Optical filters that use infrared light often cause halos in the NIR region, which are exacerbated by the halos produced by the filter itself.