Vespera Dual Narrowband Filter Am3 13 arcseconds

13 arcseconds

1: Set 60mm above the 2" receptacle has proven to be very versatile

Lowest useful magnification: x18

The design also results in very low vignetting

69cm / Max

Vespera Dual Narrowband Filter Am3 13 arcsecondsThe Vespera Dual Band Filter is a dual narrowband filter that will significantly improve your photo quality whether you are viewing from an urban or a dark sky environment. By only allowing light which are very precisely the wavelengths of Hydrogen Alpha (H alpha) and Oxygen III (O III), found mainly in deepspace nebulae, the filter will increase the contrast between the object and the sky background. Therefore, using it makes it possible to obtain a