parametric solar filter for binoculars

thingiverse

This is a modified version of jnavarro1178's "solar filter for binoculars" that lets you change the diameter to fit your binoculars using the customizer. jnavarro1178's original summary: --- You can now quickly install and remove solar filters from your binoculars, making it easy to observe sunspots and planetary transits. Simply attach the film to the holder and snap it into place with a ring, then store everything neatly in two covers. To get started, purchase online solar filter film and cut it to fit the printed holder hole perfectly. Then, modify the scad file as needed to suit your binocular tubes. Make sure to print holders that fit snugly onto your binoculars. This will prevent them from coming loose while you're observing the sun. Also, ensure both tubes are covered with filters before looking at the sun directly.