Svbony SV220 2" Dual Band 7nm HA & OIII Filter - W9172B Celestron StarSense Explorer Dob About the Celestron Polar Finder

About the Celestron Polar Finder - CG-5

Celestron Solar Safe filter technology is SAFE for direct observation of the Sun and has been independently tested to conform to and meet the transmission requirements of ISO 12312-2:2015(E)

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and where refractors are their sharpest)

Svbony SV220 2" Dual Band 7nm HA & OIII Filter - W9172B Celestron StarSense Explorer Dob About the Celestron Polar FinderSvbony 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