High Quality Baader UV/IR rejection filter for astrophotography
The ultimate UV and Infrared blocker, featuring hard Ionbeam coatings, and fine optically polished glass! The ideal filter for the NexImage and other CCD imagers. This filter has an extremely sharp cutoff at 690nm yet leaves all the visible red, including the important 656nm H-alpha emission line, preventing IR wavelengths from blurring fine detail in your digital images. It corresponds to the L ("Luminance") filter in an RGB filter set. Provides pinpoint stellar images.
Freedom from ghost images (very low reflection multi-coating) enables pinpoint star images and fine planetary detail. Ultra-Hard Ionbeam hardened coatings. This process results in a dense, sealed and highly scratch-resistant coating surface.
Threads onto all 2" eyepieces.