Astonishing - intensity interferometry in your backyard! Mozdzen+ on “Intensity Interferometer Results on Sirius with 0.25 m Telescopes” with consumer Single Photon Avalanche Detectors. I’m genuinely amazed at what can be done - precision timing to hundreds of picoseconds(!) 🔭🪐 #astrodon

A small white telescop dome on a gravel back yard, with the dome open and a 0.25m telescope pointing off to the right. A second identical telescoope sits outside and points in the same direction. The Sun shines on both telescopes from the left.A graph showing the g(2) correlation function from the experiment. It is a noisy line with one sharp distinct peak at about 202 nanoseconds.

Matthew Kenworthy @kenworthy