Baader Unmounted AstroSolar Safety Film for Visual Solar Observing

Baader PlanetariumSKU: 2459286

Size: 140 x 155 mm (5.5" x 6")
Sale price$32 CAD

Customer Reviews

Based on 3 reviews
Claude Asselin

Will be very usefull.

David Hunter
Baader filter material for balloon borne solar telescope works great!

We're using the Baader filter material for a small balloon borne solar telescope and the filter does the job and it stands up to the upper atmospheric conditions. The plan is for the filter to be in place during the partial phase of the 8 April 2024 solar eclipse but it will be automatically removed at the time of totality. Our Baader filter has been to 100,000 feet and back. See our project at




Unmounted AstroSolar Safety Film for solar visual observing.

Make your own solar filters for larger scope sizes or multiple smaller scopes

  • AstroSolar® Safety Film 5.0 for solar observation and photography at high magnification
  • Size: ca. 20 x 29 cm – 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.

Please see the AstroSolar FAQ Page for more information

Instructions from Baader on using the film to easily make your own solar filters

Additional Resources

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