Products

5Å (0.5nm) Ultra-Narrow Bandpass Filter Centered on the 393.3nm Calcium II K-Line 12mm Clear Aperture Refractors up to 100mm Aperture Without Extr...

Dualband design passes both H-alpha (656.3nm) and CaK/CaH (393nm) wavelengths Wide 25nm FWHM bandpass with over 90% peak transmission in both band...

Passes Ha (656.3nm), CaK (393.3nm), and CaH (396.8nm) wavelengths Without extra light reduction, for refractors up to 100mm aperture only Comes wi...

Passes Ha (656.3nm), CaK (393.3nm), and CaH (396.8nm) wavelengths Without extra light reduction, for refractors up to 100mm aperture only Comes wi...

Enhanced Transmission for Superior Signal-to-Noise Ratio Anti-Reflection Coating to Reduce Halo Effect Optimized for Fast Optics up to f/2 Desc...

Designed for imaging the ultraviolet cloud structures of Venus and Jupiter Average transmission greater than 80% in the target UV bandpass Blocks ...