This is remarkable: an amateur built a modest array of Yagi-Uda antennas, hooked it up to hacked digital TV chips and detected a pulsar. Not only that, they observed the pulsar continuously long enough to catch a rare "glitch" in action. (1/n)
Vela Pulsar Glitch Detected with RTL-SDR Based Radio Telescope
https://www.rtl-sdr.com/vela-pulsar-glitch-detected-with-rtl-sdr-based-radio-telescope/