At Yerkes Observatory, the largest achromatic refractor ever put into astronomical use is the 102 centimetres (40 in) refractor.
The telescope is the same as you’d find in any amateur astronomers back garden just much bigger!
Refracting
At Yerkes Observatory, the largest achromatic refractor ever put into astronomical use is the 102 centimetres (40 in) refractor.
The telescope is the same as you’d find in any amateur astronomers back garden just much bigger!