Baader Filters H-alpha CMOS f/2 Ultra-Highspeed 1.25" (70928)

H-alpha filters are designed to pass light at a wavelength of 656nm. They are the ideal choice for narrowband H-alpha astrophotography, offering high-contrast imaging that reveals intricate details of nebulae, even in areas with significant light pollution.

Specifications:

    Central Wavelength (nm): 656.3
    Half-Value Width (nm): 3.5
    Frame Size: 1.25"
    Mount Material: Aluminium
    Coating: Reflex-Blocker™
    Connection (to Telescope): 1.25"
    Filter Thickness (mm): 2

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 essential for astrophotographers aiming to capture detailed and high-contrast images of nebulae, isolating their specific emissions while reducing interference from light pollution.