Baader Filters H-alpha CMOS f/2 Ultra-Highspeed 50x50mm (70933)

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

Specifications:

    Central Wavelength (nm): 656.3
    Half-Value Width (nm): 3.5
    Frame Type: Frames
    Mount Material: Aluminium
    Coating: Reflex-Blocker™
    Filter Thickness (mm): 2
    Filter Size (mm): 50 x 50

Compatibility and Applications:

    Appropriate for f/ratio: f/3.4 - f/1.8
    Type: Line filter
    Series: f/2 Ultra-Highspeed

Applications:

    Useful for photographs: Yes
    Visually useful: No
    Twin stars, Moon & Planets: Not suitable
    Nebulae & Galaxies: Ideal

These H-alpha filters are indispensable for astrophotographers who want to isolate hydrogen emissions and produce detailed, high-contrast images of nebulae while reducing interference from light pollution.