Baader Planetarium AstroSolar ECO-Size Safety Film, 5.0 OD, 140x155mm

• AstroSolar ECO-size Safety Film 5.0 for solar observation and photography at high magnification• Size: ca. 140 x 155 mm, incl. DIY-instructions and DIY cutting-template - 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• 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• The film is from the same material as our proven AstroSolar Safety Film 5.0 in A4-size, due to high demand now available in a smaller size at an economical price, suitable as solar filter for small telescopes, finders, binoculars, spotting scopes and camera lenses