Baader Filters H-alpha 20nm 2" (78375)

The H-alpha filter is designed to pass light at a wavelength of 656nm, making it an excellent choice for narrowband astrophotography. It delivers high-contrast imaging and unveils rich details of nebulae, even in areas with strong light pollution. This filter is particularly suited for capturing hydrogen nebulae and supernova remnants and is suitable for both visual observation and photography.

Specifications:

• Central wavelength (nm): 656.3

• Half-value width (nm): 20

• Connection (to the telescope): 2"

• Mount material: Aluminium

• Coating of optical system: Dielectric

• Frame size: 2"

• Filter thickness (mm): 2

• Weight (g): 12

• Height (mm): 6

General Information:

• Type: Filters

• Type of build: Line filter

Area of Application:

• Anti light-pollution: Yes

• Hydrogen nebulae: Yes

• Planetary nebulae: Yes

• Comets: Not applicable

• Central stars: Not applicable

• Supernova remains: Yes

• Useful for photographs: Yes

• Visually useful: Yes