neutronbumblebee, miesiąc temu (edited miesiąc temu)

Its a nice bit of tech. 73M in construction costs. The focal plane instrumentation alone weighs 10 tonnes. It includes 5,000 small computer controlled fiber positioners. The entire focal plane can be reconfigured for the next exposure in less than two minutes while the telescope slews to the next field. The DESI instrument is capable of taking 5,000 simultaneous spectra of different Galaxies

https://mander.xyz/pictrs/image/ba39daf5-4f07-442c-8039-17b2a1e1e813.png