Astrophotography filters are either narrowband (for nebulae) or wideband (for galaxies and star clusters). Narrowband filters isolate specific light wavelengths; wideband filters let through a broader ...

Astrophotography is a hobby with a huge learning curve, and one aspect that can muddy the waters is the dizzying array of filters on the market. What is narrowband? What size do I need? Which are good ...