Baader Filters H-alpha CMOS f/2 Highspeed 31mm

The Baader Filters H-alpha CMOS f/2 Highspeed 31mm provides maximum transmission of the Hα line (656.3 nm) in fast optics such as RASA or HyperStar. The filter layers are thermally stabilized and do not shift at steep incidence angles, resulting in accurate emission registration without halos.

Application:
Suitable for 31 mm filter holders and cameras with APS-C sensors. Perfect for Hα emission nebulae and detail work in light-polluted locations.

Specifications:
Diameter: 31 mm (without mount)
Wavelength: 656.3 nm
Bandwidth: ±6.5 nm
Transmission:>90%
Compatible: CMOS, f/2 optics
Country of origin: Germany