Preparing for the 2017 solar eclipse requires purchase of a few items: solar glasses, solar filters for all camera lenses, and, for the adventurous, a solar funnel imager. A “funnel?” Yes, a funnel, the kind that Home Depot carries. If you already have a telescope, you might be able to build an imager large enough for a half dozen friends to view the partial eclipse phases at the same time. You will also be able to see sunspots, at least the larger ones.
The gallery has a link to the NASA site containing instructions for building your own funnel imager.
Solar Funnel Imager Gallery – July 28, 2017:
https://diversions.smugmug.com/Galleries/Galleries-by-Subject/Astrophotography/Astrophotograpy-Equipment/
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