Solar Spectroscopy

My 3D-printed Sol’Ex Spectroheliograph mounted on Sky Watcher Evostar ED 72 DS Pro 28/5/2024

By Admin May 28, 2024

Getting it ready for next sunny day

Andy

By Admin

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Principals of design of geodesic radio dish

Does a geodesic dome naturally form a parabola? (Relevant to design of geodesic parabolic radio astronomy dish)

One design for making parabolic radio astronomy dishes is to use a geodesic design – how do amateurs make a parabolic dish using this?

If I want to make full scale Ewan hydrogen horn what dimensions should I use for all pieces of wood that form struts?