Figure 3-25 Mosaic of Charge-Coupled Devices (CCDs) (a) These 40 CCDs combine to provide 378 million light-sensitive pixels that store images collected by the Canada-France-Hawaii Telescope on the dormant volcano Mauna Kea in Hawaii. Electronic circuits transfer the data to a waiting computer. (b) This image of the Rosette Nebula, a region of star formation 5000 ly away in the constellation Monoceros (the Unicorn), was taken with the CCD in (a). The image shows the incredible detail that can be recorded by large telescopes and high-resolution CCDs.