Baader Filters OIII CMOS f/2 Highspeed 31mm (70915)
52340.93 Ft
Tax included
OIII filters only permit light with a wavelength of 501 nanometers to pass through. This corresponds to the spectral lines of doubly ionized oxygen. These lines are emitted by planetary nebulae and some emission nebulae, allowing these objects to remain visible while the filter blocks out other light. This enhances contrast and reveals faint nebulae that were previously invisible.