Vespera Dual Narrowband Filter Am3 Optical coating: multi-compensated

Optical coating: multi-compensated

Back focus: 72

8" sensor with 3864 x 2192 pixels

The design also results in very low vignetting

Vespera Dual Narrowband Filter Am3 Optical coating: multi-compensatedThe 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