Tony Finchdot@dotat.athttps://dotat.at/https://dotat.at/:/4RKGQ.html2018-03-29T10:18:25ZDragonfly: an optical telescope built from an array of off-the-shelf Canon lenses.
2018‑03‑29
Dragonfly: an optical telescope built from an array of off-the-shelf Canon lenses.