Code: DS-HA7125 Precision High Quality 1.25 inch Narrowband H-alpha Filter 7nm passband
Ultra-narrow 7nm bandwidth with extremely high transmission for the shortest exposures possible.
Completely rejects light pollution as well as blocking longer wavelengths in the deep red regions.
Plane-optically polished with an accurate 1-4th wavefront error over the entire surface.
Includes anti-reflection coatings designed to prevent halos and image artefacts. The ultra-hard ion beam deposition ensures the coatings will never degrade from use or normal cleaning.
Used for high contrast deep sky imaging with a monochrome CCD cameras.
-Glass thickness: 2mm
-Diffraction limited, the filter will not reduce the optical performance of your telescope!
-Includes a high-quality long lasting filter box
-Seated Cell height: 5.1mm