See video on YouTube: https://www.youtube.com/watch?v=eYQj2g1aOd4
Documentation from the AAS on how to make your own: https://aas.org/sites/default/files/2020-02/Build_a_Sun_Funnel_v3.4.pdf
The full itself which consists of a funnel, shower curtains, hose clamps, zipties, and a 17mm Plossl eyepiece cost about $35 in parts. The shower curtains can be used to make at least another dozen funnels if I want, same with the pack of Zip Ties.
I want to update the shower cutain to an actual rear projection screen. If I can get better definition on t he solar surface, it will indeed be the ultimate outreach accessory (aside from my Lunt 40).
If you are in the Cambridge/Boston area, I'll be hosting a 16% solar eclipse event: https://www.cambridgema.gov/departments/cambridgepubliclibrary/calendar/view?guid=95dec76768c3495d9e7b3ca24173ecf4
Best of luck to everyone traveling for the eclipse. Clear skies!
