Baader Filters OIII CMOS Narrowband 50.4mm (70862)

The narrowband O-III 3nm filter is specifically designed for nebula observation, allowing a 3nm bandwidth of light centered on a wavelength of 500nm to pass through. This corresponds to the OIII emission lines, while blocking out all other light. It is an excellent choice for astrophotography, enhancing contrast and detail in nebulae by isolating specific wavelengths and reducing light pollution.

Specifications

• Central Wavelength (nm): 500.7

• Half-Value Width (nm): 6.5

• Frame: Ring

• Mount Material: Aluminium

• Coating of Optical System: Reflex-Blocker™

• Appropriate for: f/10 - f/3.5

• Filter Thickness (mm): 2

• Filter Size (mm): 50.4

General Information

• Type: Filters

• Type of Build: Line Filter

• Series: Narrowband

Area of Application

• Useful for Photographs: Yes

• Visually Useful: No

• Twin Stars: No

• Moon & Planets: No

• Nebulae & Galaxies: Yes