Baader Narrowband OIII Filter CMOS f/2 Highspeed 2 inch

The Baader OIII CMOS f/2 Highspeed 2″ combines familiar German precision with modern coating technology. Specially tailored to fast f/2 light cones, this filter maintains a stable transmission window at 500.7 nm, revealing oxygen-rich emission nebulae in all their structure.

The coating withstands extreme conditions and minimizes reflections, eliminating halos even in bright stars.

Application:
Ideal for:

• Large sensors and f/2 optics
• RASA, HyperStar, Newton f/3-f/2
• OIII nebulae, supernovas, planetary nebulae

Specifications:
Type: OIII CMOS f/2 High-speed
Wavelength: 500.7 nm
Bandwidth: 6.5 nm
Transmission:>90%
Barrel size: 2″
Coating: Hard, anti-reflective, moisture-resistant
Country of origin: Germany