SKY ROVER 1.25 inch Herschel solar filter prism observation Bard membrane astronomical telescope accessories

Item number: # 29156

Model: 1.25-inch Herschel Sun Filter

Interface: 1.25 inches (the eyepiece mount also provides M42x0.75 threads)

Optical path length: approximately 86mm

Built in: ND3.0 density filter (1/1000 transmittance, FMC, non removable) CPL polarization filter (can be adjusted by rotating the eyepiece holder, FMC, can be removed as needed) filter thread M28.5×0.6

Volume: Approximately 85x40x79mm (length x width x height)