APM Polarizing filter 1 1/4"This filter can be screwed into 1 1/4" eyepieces and can be used for individual light attenuation in combination with Herschel solar prisms. Turning the filter alters the brightness. (A Herschel prism polarises the light)
Delivery contains: Products specifications
| Barrel size / Filter thread | 1 1/4" with filterthread |
| Weight | 1 oz |
| Diameter | for 28.5 mm |
| Coating | Anti reflective coated |
| Glass material | High precision plane-parallel glass |
| Filter effect | Polarising filter |
