© Paul’s Astrophotography 2020
Narrowband
Narrowband imaging is so called because the filter only allows light at very narrow bandwidths to pass through. Most Nebulae emit the majority of their light in specific wavelengths and narrowband filters are designed to only let this light pass through them which will show amazing clarity and previously hidden features that are too faint for normal RGB imaging.
Galaxies Nebulae Narrowband