The large GeminiNorth telescope suffered damage last year when its primary mirror was chipped. Now it's back and has captured an image of the Pinwheel Galaxy.
Modern telescopes are huge and complex installations. They may be either an array of many smaller dishes or a single giant dish, but in either case they are equipped with delicate mirrors, as well as observation instruments, controls for pointing the telescope in the required direction, and electronic systems for recording data.
Recommended Videos The good news was that the damage was contained to one part of the mirror, but the bad news was that repairing an 8.1-meter mirror that needs to have a flawless surface finish is no easy task. Repair work on the mirror began in February this year and was completed in March, at which point the telescope had to be reassembled.
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