Baader Filters H-alpha CMOS Narrowband 65x65mm (70857)

H-alpha filters are designed to transmit light at a wavelength of 656 nm, making them the best choice for narrowband astrophotography. They provide high-contrast imaging and reveal rich details of nebulae, even in areas with strong light pollution.

Specifications:

Capacity:

• Central Wavelength (nm): 656.3

• Half-Value Width (nm): 6.5

Frame:

• Mount Material: Aluminium

• Coating: Reflex-Blocker™

Compatibility:

• Appropriate for: f/10 to f/3.5

• Filter Thickness (mm): 2

• Filter Size (mm): 65 x 65

General Information:

• Type: Filters

• Build Type: Line filter

• Series: Narrowband

Area of Application:

• Useful for Photographs: Yes

• Visually Useful: No

• Twin Stars Observation: No

• Moon & Planets Observation: No

• Nebulae & Galaxies Observation: Yes