Optolong Filters H-alpha 3nm 2" (73721)

The H-alpha filter selectively transmits light at a wavelength of 656nm, making it the premier choice for narrowband H-alpha astrophotography. It excels in high-contrast imaging, revealing intricate details of nebulae even in regions with significant light pollution.

Specifications:

Capacity: Single

Connection (to eyepiece): 2"

Frame: 2"

Passband (nm): 656

Half-value width (nm): 3

General Type: Filters

Type of Build: Line filter

Area of Application:

Useful for photographs: Yes

Anti-light pollution: Yes

H-alpha: Yes

Planetary nebulae: -

Supernova remains: Yes

Visually useful: Yes

Hydrogen nebula: Yes

Nebulae & galaxies: No