Coronado SolarMax II 40mm H-α Etalon with 15mm Blocking Filter Set

Unleash the full observational power of your nighttime telescope with Meade Instruments' Coronado SolarMax II 40mm H-α Etalon with 15mm Blocking Filter Set. This two-part kit consists of a primary front external etalon and a rear 15mm blocking filter tuned to the Hydrogen-alpha bandwidth with a bandpass of 0.7Å. This system is designed to fit onto astronomical OTAs and adapt them for solar observation, and is meant for use on telescopes with focal lengths of up to 1500mm. Prominences are revealed in high-contrast with the filters installed and when conditions are right, surface texture is also revealed. Prominences generally appear larger with 0.7Å filters versus narrower bandwidths.