What are H-Alpha filters?
H-Alpha filters remove all wavelengths of light except
for 656.3 nm, which is the wavelength of light emitted when a hydrogen
atom’s single electron drops from its second to its first excited state.
This reddish-orange wavelength reveals incredible details in nebulae,
galaxies and the surface of the Sun.
What can be observed with an
An H-Alpha filter can help you observe the structure of the
Milky Way and see better details in galaxies and nebulae. A solar H-Alpha
filter reveals the surface textures of the Sun.
What is the wavelength of
Hydrogen-Alpha emits light at a wavelength of 656.3