Baader Filters H-alpha CMOS f/3 Ultra-Highspeed 50.4mm (75574)

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

Specifications:

• Central wavelength (nm): 656.3

• Half-value width (nm): 3.5

Frame:

• Mount material: Aluminium

• Coating: Reflex-Blocker™

Appropriate for:

• Focal ratio range: f/3.4 - f/2.3

• Filter thickness (mm): 3

• Filter size (mm): 50.4

General Information:

• Type: Filters

• Type of build: Line filter

• Series: f/3 Ultra-Highspeed

Area of Application:

• Useful for photographs: Yes

• Visually useful: No

• Nebulae & galaxies: Yes

• Moon & planets: No