Baader Planetarium H-Alpha 7nm Narrowband Filter, 50.8mm Unmounted

Explore the wonders of the night sky with the Baader Planetarium H-Alpha 7nm Narrowband Filter, a high-quality, durable, and reliable tool specifically designed for astrophotography. This innovative filter delivers unparalleled contrast in deep sky images of H-II regions, all within the shortest possible exposure times.

Its narrow 7nm FWHM bandwidth boasts a transmission rate at H-Alpha of over 90%, effectively rejecting light pollution and enhancing your celestial viewing experience. The Baader 7nm H-Alpha filter's high optical quality ensures no loss in sharpness or contrast, allowing you to capture the intricate details of the night sky with precision and clarity.

Each substrate of this effective filter is fine-optically polished plane parallel, delivering a smooth and accurate 1/4 wavefront over the entire surface. This unique custom polishing operation sets the Baader filters apart from other standard precision polished filter substrates used by most other filter manufacturers.

The coatings on this reliable filter are professionally applied using the most advanced equipment available, ensuring high consistency for bandpass centering and transmission. The ultra-hard ionbeam deposition guarantees the coatings will stand the test of time, never degrading from use or normal cleaning.

In the world of astronomy and astrophotography, the Baader Planetarium H-Alpha 7nm Narrowband Filter is a testament to the blend of innovation and quality that Baader Planetarium is renowned for.