STC astro duo narrowband screw circular filters are a must for your astro photography. Our narrowband filter has been specifically designed to reduce interference from artificial lighting within lighted areas like a city, and enhance the wave length of Ha and Olll. This leaves your images capturing specific wavelengths of gaseous and planetary nebulae. There’s more, each filter boasts Ion Beam assisted deposition, Double-sided multilayer NANO coating, Waterproof, grease-proof and antistatic protection.
Fed up of the additional filter cost when you buy a new size lens? Our clip filters not only protect your sensor, offer no degradation, but work with all your lenses!
We understand you want the best. You spend as much money as you can on your equipment. That's why all our products are manufactured from the latest materials and coating technology.