Baader Narrowband enforced 3.5nm H-alpha Filter 2",
These three sizes of 3.5nm H-alpha Enforced-Narrowband Filters open up the extremely narrow 3,5nm H-alpha world. This enforced contrast results in even fainter stars, providing more signal of faintest nebulae detail. Manufacturing such ultra-narrow filter does require extreme coating homogeneity and very high CWL precision, which these filters are designed for. The initial production did center on the most necessary sizes (2" / 50.4mm round and 50x50mm square - other sizes to follow) CWL= Center-wavelength / FWHM= full width half maximum
- Applicazione filtro
- Fotografico
- Tipo di filtro
- Narrowband*~H-alpha
- Filter size
- 2 inch (50,8mm)