Farpoint SSF-305 Solar Filter — 300–305 mm Telescope TubeThe Farpoint SSF 305 Solar Filter is designed for telescopes with 300305 mm tube outer diameter. ISO 12312 2 certified solar film blocks 99. 999% of harmful UV and IR radiation, delivering a sharp, natural color white light view of the Sun, sunspots, transits, and partial eclipses. Specifications Fits telescope tube OD: 300305 mm (11. 8112. 01) Filter outer diameter (Mask OD): 309 mm (12. 17) Clear aperture (Mask ID): 259 mm (10. 20) Construction:
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Farpoint SSF-305 Solar Filter — 300–305 mm Telescope Tube