Baader Planetarium AstroSolar Safety Film OD 5.0, 100x50cm saules filtrs

AstroSolar® Safety Film 5.0 for solar observation and photography at high magnification Size: 100 x 50 cm (~ 40 x 20 inch) – telescope quality – Optical Density (OD) = 5.0 Safe for visual solar observation (with additional optics) and imaging This highest precision film consistently produces strehl ratios of 94 to 96 percent at interferometric tests – thus it performs optically like a Fluorite Triplet Lens by Carl Zeiss or Astro Physics AstroSolar Safety Film is best suited for precision work with all astronomical telescopes and binoculars – just as well as for all photographic camera- and tele-lenses For more than 25 years on the market, the only film-material made to not deteriorate the optical wavefront, it does allow to attain high magnification with any long-range optics without reducing sharpness or contrast of the solar surface.