Baader Planetarium 1.25 Inch Double Polarizing Filter

Baader's newest addition for Achromat owners. The Semi-APO works like its name implies - delivering an amazingly neutral view, while cutting most of the annoying and contrast-robbing violet fringe that plagues all achromats. The Semi-APO filter ...

CCD imagers will find Baader's new Narrowband 7nm H-Alpha passfilter to deliver the absolute highest contrast deep sky images of H-II regions, with the shortest exposures possible. Its narrow 7nm FWHM bandwidth has a transmission at H-Alpha of ...

Achromat owners rejoice! Baader Planetarium has taken minus violet filtration to a new level. The Fringe Killer brings a type of filtration, never before seen, to the amateur. Rather than simply trimming the shorter wavelengths at a chosen ...