ZWO Filters 2" Duo band

The ZWO Duo-Band Filter is a dual narrowband filter designed to complement the spectrum of color ASI cameras. Perfect for astronomers who possess color cameras and wish to explore narrowband imaging techniques or capture emission objects without investing in a monochrome camera, filter wheel, and narrowband filter set.

This filter serves as an affordable entry point into narrowband imaging, particularly beneficial for astronomers operating in light-polluted urban areas. Its dual band pass feature transmits light at Hα (656nm) and OIII (500nm) wavelengths, effectively mitigating interference from natural light sources like moonlight and artificial light pollution such as street lighting. By enhancing contrast and visibility, it enables the capture of deep sky objects like emission nebulae using color cameras.

Key Specifications:

• Bandwidth: Hα (15nm), OIII (35nm)
• Transmission: More than 90% at major OIII lines (486nm, 496nm, and 501nm), More than 80% at Hα line (656.3nm)

Technical Specifications:

Frame: 2"

Connection to Telescope: 2"

Mount Material: Aluminum

Type of Build: UHC Filters

Type: Filters

Application Areas: Effective against light pollution, suitable for capturing planetary nebulae, hydrogen nebulae, and supernova remnants.

Visually Useful: Yes

Useful for Photographs: Yes

The ZWO Duo-Band Filter empowers astronomers with an economical solution for exploring narrowband imaging and enhancing astrophotography outcomes, making it an invaluable addition to their toolkit.