Svbony SV220 2" Dual Band 7nm HA & OIII Filter - W9172B Celestron StarSense Explorer Dob the DWARF 3 locks on

Svbony SV220 2" Dual Band 7nm HA & OIII Filter - W9172B Celestron StarSense Explorer Dob the DWARF 3 locks onSvbony Dual Band 7nm H Alpha OIII 2" Filter This Svbony H Alpha OIII 7nm Narrowband Filter is designed for astrophotography in dark skies as well as a light polluted environment. Take color images without the need for separate Oxygen III and H Alpha filters. The Dual Band Filter is useful for imaging emission nebulae, planetary nebulae and supernova remnants. It will also sharply cut off the inference of artificial light from sodium vapor or mercury

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