Baader CCD Narrowband Filter Sets



Baader Narrowband Filter – why?
A brief introduction to the function of narrow band filters. Narrowband filters have revolutionized CCD photography for the “amateur astronomer” in the past decade in incredible ways. It was now possible for small telescopes, even in light polluted city areas, to photograph faint nebula – and generally the universe surrounding us in the incredible variety of coloured “gaseous areas” – in hours of exposure time, and by combining the exposure of each colour of the various emission lines – even the faintest nebula were suddenly registered despite strong light-polluted skies. Suddenly, the smallest backyard telescope can collect the real light of gaseous nebula to produce image results there were otherwise only reserved for telescopes with several meters of light-collecting surface without any time limit. The narrow emission area and spectral half width of these filters ensures that only the light emitted or reflected from the gaseous nebula literally “punches” through, even from light polluted city and bright sky background. The stars, which would otherwise outshine the light of the nebula completely, remain tiny. The final image now succeeds colour composites (consisting indeed only from the many hours of collected photons) and is much better, you can even conclude with an...