Baader Planetarium Single Polarising Filter 31.7MM

Baader Planetarium Single Polarising Filter 31.7MM

Planoptically Polished with Phantom Coating Group (PCG).

Enhances contrast during planetary observation. 
Also extremely Useful for solar work in conjunction with Baader Herschel Wedge Prism (#2956500V or #2956500P)

Many features, including:

• Put the Baader Solar Polarization Filter between the Baader Herschel Wedge and the eyepiece and easily adjust the brightness of the solar image. 
• The 1.25" model (sold here) can attach directly to 1.25" eyepiece. 
• If you are using both 1.25" & 2" eyepieces, a 2" Polarization filter is recommended, along with a T2 2"-to-1.25" Adapter, such as #2408190, so that you can conveniently switch eyepieces regardless of their barrel size. 
• The Baader Solar Polarization Filter achieves the optimum brightness for maximum visual contrast at any magnification. 
• Planoptically polished.