Baader Filters OIII CMOS f/3 Ultra-Highspeed 65x65mm (75583)
2136.25 lei
Tax included
OIII filters are designed to allow light with a wavelength of 501 nanometers to pass through, corresponding to the spectral lines of doubly ionized oxygen. These lines are emitted by planetary nebulae and some emission nebulae. By blocking all other wavelengths, the filter enhances contrast and makes faint nebulae visible for the first time.