Full aperture solar filter

Solar filter made using Baader-Planetarium solar film. Note that this will not give you the sexy views that a Hydrogen Alpha filter will. But you can see sunspots, and watch eclipses, and see the Transit of Venus. If you make this, make absolutely sure that it can't fail, and do not substitute something cheaper for the filter material. Remember that "photocoagulation" is just fancy talk for turning your eye into this.

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